Biggest changeResults of Operations The following table sets forth, for the years indicated, expenses and other items as a percentage of revenue from operations: 2022 2021 Revenue from operations 100.0 % 100.0 % Operating expenses: Salaries, wages and benefits 43.4 47.0 Operating supplies and expenses 13.6 10.8 General supplies and expenses 2.6 2.6 Operating taxes and licenses 2.3 2.5 Insurance and claims 0.9 1.0 Communication and utilities 0.6 0.7 Depreciation and amortization 4.5 4.9 Purchased transportation 2.5 3.5 Miscellaneous expenses, net 0.2 0.5 Total operating expenses 70.6 73.5 Operating income 29.4 26.5 Interest (income) expense, net (0.1 ) 0.0 Other expense, net 0.1 0.1 Income before income taxes 29.4 26.4 Provision for income taxes 7.4 6.7 Net income 22.0 % 19.7 % 22 Key financial and operating metrics for 2022 and 2021 are presented below: 2022 2021 Change % Change Work days 253 252 1 0.4 Revenue (in thousands) $ 6,260,077 $ 5,256,328 $ 1,003,749 19.1 Operating ratio 70.6 % 73.5 % Net income (in thousands) $ 1,377,159 $ 1,034,375 $ 342,784 33.1 Diluted earnings per share $ 12.18 $ 8.89 $ 3.29 37.0 LTL tons (in thousands) 10,211 10,119 92 0.9 LTL tonnage per day 40,359 40,153 206 0.5 LTL shipments (in thousands) 12,989 12,880 109 0.8 LTL shipments per day 51,341 51,111 230 0.5 LTL weight per shipment (lbs.) 1,572 1,571 1 0.1 LTL revenue per hundredweight $ 30.24 $ 25.59 $ 4.65 18.2 LTL revenue per shipment $ 475.45 $ 402.01 $ 73.44 18.3 LTL revenue per intercity mile $ 8.28 $ 7.32 $ 0.96 13.1 LTL intercity miles (in thousands) 746,028 707,611 38,417 5.4 Average length of haul (miles) 934 935 (1 ) (0.1 ) Our financial results for 2022 included double-digit growth in our revenue, net income and earnings per diluted share.
Biggest changeResults of Operations The following table sets forth, for the years indicated, expenses and other items as a percentage of revenue from operations: 2023 2022 Revenue from operations 100.0 % 100.0 % Operating expenses: Salaries, wages and benefits 44.8 43.4 Operating supplies and expenses 12.2 13.6 General supplies and expenses 2.8 2.6 Operating taxes and licenses 2.5 2.3 Insurance and claims 1.3 0.9 Communication and utilities 0.7 0.6 Depreciation and amortization 5.5 4.5 Purchased transportation 2.1 2.5 Miscellaneous expenses, net 0.1 0.2 Total operating expenses 72.0 70.6 Operating income 28.0 29.4 Interest (income) expense, net (0.2 ) (0.1 ) Other expense, net 0.1 0.1 Income before income taxes 28.1 29.4 Provision for income taxes 7.0 7.4 Net income 21.1 % 22.0 % 23 Key financial and operating metrics for 2023 and 2022 are presented below: 2023 2022 Change % Change Work days 252 253 (1 ) (0.4 ) Revenue (in thousands) $ 5,866,152 $ 6,260,077 $ (393,925 ) (6.3 ) Operating ratio 72.0 % 70.6 % Net income (in thousands) $ 1,239,502 $ 1,377,159 $ (137,657 ) (10.0 ) Diluted earnings per share $ 11.26 $ 12.18 $ (0.92 ) (7.6 ) LTL tons (in thousands) 9,260 10,211 (951 ) (9.3 ) LTL tonnage per day 36,745 40,359 (3,614 ) (9.0 ) LTL shipments (in thousands) 12,176 12,989 (813 ) (6.3 ) LTL shipments per day 48,317 51,341 (3,024 ) (5.9 ) LTL weight per shipment (lbs.) 1,521 1,572 (51 ) (3.2 ) LTL revenue per hundredweight $ 31.31 $ 30.24 $ 1.07 3.5 LTL revenue per shipment $ 476.25 $ 475.45 $ 0.80 0.2 LTL revenue per intercity mile $ 8.38 $ 8.28 $ 0.10 1.2 LTL intercity miles (in thousands) 691,632 746,028 (54,396 ) (7.3 ) Average length of haul (miles) 925 934 (9 ) (1.0 ) Our financial results for 2023 reflect continued softness in the domestic economy that contributed to the decline in our revenue.
A hypothetical change of 10% in our percentage of completion estimate would not have a material effect on our recorded revenue. Property and Equipment Property and equipment are recorded at cost and depreciated on a straight-line basis over their estimated economic lives. We use historical experience, certain assumptions and estimates in determining the economic life of each asset.
A hypothetical change of 10% in our percentage of completion estimate would not have a material effect on our recorded revenue. 28 Property and Equipment Property and equipment are recorded at cost and depreciated on a straight-line basis over their estimated economic lives. We use historical experience, certain assumptions and estimates in determining the economic life of each asset.
Although we intend to pay a quarterly cash dividend on our common stock for the foreseeable future, the declaration and amount of any future dividend is subject to approval by our Board of Directors, and is restricted by applicable state law limitations on distributions to 25 shareholders as well as certain covenants under our Credit Agreement and Note Agreement.
Although we intend to pay a quarterly cash dividend on our common stock for the foreseeable future, the declaration and amount of any future dividend is subject to approval by our Board of Directors, and is restricted by applicable state law limitations on distributions to shareholders as well as certain covenants under our Credit Agreement and Note Agreement.
A hypothetical change of 1% in the estimated useful lives of all depreciable assets would not have a material impact on our financial results. 27 Claims and Insurance Accruals Claims and insurance accruals reflect the estimated cost of various claims, including those related to bodily injury/property damage (“BIPD”) and workers’ compensation.
A hypothetical change of 1% in the estimated useful lives of all depreciable assets would not have a material impact on our financial results. Claims and Insurance Accruals Claims and insurance accruals reflect the estimated cost of various claims, including those related to bodily injury/property damage (“BIPD”) and workers’ compensation.
On July 28, 2021, we announced that our Board of Directors had approved a new stock repurchase program authorizing us to repurchase up to an aggregate of $2.0 billion of our outstanding common stock (the “2021 Repurchase Program”).
Stock Repurchase Program On July 28, 2021, we announced that our Board of Directors had approved a stock repurchase program authorizing us to repurchase up to an aggregate of $2.0 billion of our outstanding common stock (the “2021 Repurchase Program”).
Changes in length of haul generally have a direct effect on our revenue per hundredweight, as an increase in length of haul will typically cause an increase in revenue per hundredweight. • LTL Revenue Per Shipment - This measurement is primarily determined by the three metrics listed above and is used in conjunction with the number of LTL shipments we receive to evaluate LTL revenue. 21 Our primary revenue focus is to increase density, which is shipment and tonnage growth within our existing infrastructure.
Changes in length of haul generally have a direct effect on our revenue per hundredweight, as an increase in length of haul will typically cause an increase in revenue per hundredweight. • LTL Revenue Per Shipment - This measurement is primarily determined by the three metrics listed above and is used in conjunction with the number of LTL shipments we receive to evaluate LTL revenue. 22 Our primary revenue focus is to increase density, which is shipment and tonnage growth within our existing infrastructure.
The Series B Notes are senior unsecured obligations and rank pari passu with borrowings under our Credit Agreement or other senior promissory notes issued pursuant to the Note Agreement.
The Series B Notes are senior unsecured obligations and rank pari passu with borrowings under the Credit Agreement or other senior promissory notes issued pursuant to the Note Agreement.
We expect to fund these capital expenditures primarily through cash flows from operations, our existing cash and cash equivalents, short-term investments and, if needed, borrowings available under our Credit Agreement or Note Agreement. We believe our current sources of liquidity will be sufficient to satisfy our expected capital expenditures for the next twelve months and in the longer term.
We expect to fund these capital expenditures primarily through cash flows from operations, our existing cash and cash equivalents and, if needed, borrowings available under the Credit Agreement or Note Agreement. We believe our current sources of liquidity will be sufficient to satisfy our expected capital expenditures for the next twelve months and in the longer term.
Audit Committee Approval The Audit Committee of our Board of Directors reviews and approves all related person transactions in accordance with our Related Person Transactions Policy.
Audit Committee Approval The Audit Committee of our Board of Directors reviews and approves all related person transactions in accordance with our Related Person Transactions Policy. 29
Increases in density allow us to maximize our asset utilization and labor productivity, which we measure over many different functional areas of our operations including linehaul load factor, pickup and delivery stops per hour, P&D shipments per hour, platform pounds handled per hour and platform shipments per hour.
Increases in density allow us to maximize our asset utilization and labor productivity, which we measure over many different functional areas of our operations including linehaul load factor, P&D stops per hour, P&D shipments per hour, platform pounds handled per hour and platform shipments per hour.
Discussions of our 2020 results and year-to-year comparisons between 2021 and 2020 that are not included in this Annual Report on Form 10-K can be found in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2021, which was filed with the Securities and Exchange Commission on February 23, 2022.
Discussions of our 2021 results and year-to-year comparisons between 2022 and 2021 that are not included in this Annual Report on Form 10-K can be found in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, which was filed with the Securities and Exchange Commission on February 22, 2023.
We do not anticipate financial performance that would cause us to violate any such covenants in the future, and we believe the combination of our existing Credit Agreement and Note Agreement along with our additional borrowing capacity will be sufficient to meet foreseeable seasonal and long-term capital needs. 26 The interest rate is fixed on the Note Agreement.
We do not anticipate financial performance that would cause us to violate any such covenants in the future, and we believe the combination of our existing Credit Agreement and Note Agreement along with our additional borrowing capacity will be sufficient to meet foreseeable seasonal and long-term capital needs. The interest rate is fixed on the Series B Notes.
ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS This Management’s Discussion and Analysis of Financial Condition and Results of Operations generally discusses our 2022 and 2021 results and year-to-year comparisons between 2022 and 2021.
ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS This Management’s Discussion and Analysis of Financial Condition and Results of Operations generally discusses our 2023 and 2022 results and year-to-year comparisons between 2023 and 2022.
We anticipate that any future quarterly cash dividends will be funded through cash flows from operations, our existing cash and cash equivalents, short-term investments, and, if needed, borrowings under our Credit Agreement or Note Agreement.
We anticipate that any future quarterly cash dividends will be funded through cash flows from operations, our existing cash and cash equivalents, and, if needed, borrowings under our Credit Agreement or Note Agreement.
We were in compliance with all covenants in our outstanding debt instruments for the period ended December 31, 2022.
We were in compliance with all covenants in our outstanding debt instruments for the period ended December 31, 2023.
The amounts outstanding and available borrowing capacity under the Credit Agreement are presented below: December 31, (In thousands) 2022 2021 Facility limit $ 250,000 $ 250,000 Line of credit borrowings — — Outstanding letters of credit (38,653 ) (39,169 ) Available borrowing capacity $ 211,347 $ 210,831 General Debt Provisions The Credit Agreement and Note Agreement contain customary covenants, including financial covenants that require us to observe a maximum ratio of debt to total capital and a minimum fixed charge coverage ratio.
The amounts outstanding and available borrowing capacity under the Credit Agreement are presented below: December 31, (In thousands) 2023 2022 Facility limit $ 250,000 $ 250,000 Line of credit borrowings — — Outstanding letters of credit (39,966 ) (38,653 ) Available borrowing capacity $ 210,034 $ 211,347 27 General Debt Provisions The Credit Agreement and Note Agreement contain customary covenants, including financial covenants that require us to observe a maximum ratio of debt to total capital and a minimum fixed charge coverage ratio.
LTL tons per day decreased 7.8%, due to a 5.9% decrease in LTL shipments per day and a 2.0% decrease in LTL weight per shipment. LTL revenue per hundredweight increased 13.1% as compared to the same month last year. LTL revenue per hundredweight, excluding fuel surcharges, increased 8.6% as compared to the same month last year.
LTL tons per day decreased 5.0%, due primarily to a 2.3% decrease in LTL shipments per day and a 2.8% decrease in LTL weight per shipment. LTL revenue per hundredweight increased 2.7% as compared to the same month last year. LTL revenue per hundredweight, excluding fuel surcharges, increased 6.7% as compared to the same month last year.
Our accrued liability for insurance, BIPD claims, and workers’ compensation claims totaled $129.6 million and $126.4 million at December 31, 2022 and 2021, respectively. Claims and insurance accruals are discussed further in Note 1 of the Notes to the Financial Statements included in Item 8 of this report.
Our accrued liability for insurance, BIPD claims, and workers’ compensation claims totaled $127.0 million and $129.6 million at December 31, 2023 and 2022, respectively. Claims and insurance accruals are discussed further in Note 1 of the Notes to the Financial Statements included in Item 8 of this report.
Commitment fees ranging from 0.100% to 0.175% (based upon the ratio of net debt-to-total capitalization) are charged quarterly in arrears on the aggregate unutilized portion of the Credit Agreement. For periods covered under the Credit Agreement, the applicable margin on LIBOR loans and letter of credit fees were 1.000% and commitment fees were 0.100%.
Commitment fees ranging from 0.090% to 0.175% (based upon our consolidated debt to consolidated total capitalization ratio) are charged quarterly in arrears on the aggregate unutilized portion of the Credit Agreement. For periods covered under the Credit Agreement, the applicable margin on SOFR loans and letter of credit fees were 1.000% and commitment fees were 0.090%.
Approximately $300 million is allocated for the purchase of service center facilities, construction of new service center facilities or expansion of existing service center facilities, subject to the availability of suitable real estate and the timing of construction projects; approximately $400 million is allocated for the purchase of tractors and trailers; and approximately $100 million is allocated for investments in technology and other assets.
Approximately $350 million is allocated for the purchase of service center facilities, construction of new service center facilities or expansion of existing service center facilities, subject to the availability of suitable real estate and the timing of construction projects; approximately $325 million is allocated for the purchase of tractors and trailers; and approximately $75 million is allocated for investments in technology and other assets.
The use of different assumptions, estimates or significant changes in the resale market for our equipment could result in material changes in the carrying value and related depreciation of our assets. Depreciation expense in 2022 totaled $275.6 million.
The use of different assumptions, estimates or significant changes in the resale market for our equipment could result in material changes in the carrying value and related depreciation of our assets. Depreciation expense in 2023 totaled $324.0 million.
We believe our yield management process focused on individual account profitability, and ongoing improvements in operating efficiencies, are both key components of our ability to produce profitable growth.
We believe our yield management process appropriately focuses on individual account profitability, and ongoing improvements in operating efficiencies, as key components of our ability to produce profitable growth.
We currently estimate capital expenditures will be approximately $800 million for the year ending December 31, 2023.
We currently estimate capital expenditures will be approximately $750 million for the year ending December 31, 2024.
Dividends to Shareholders Our Board of Directors declared a cash dividend of $0.30 per share for each quarter of 2022 and declared a cash dividend of $0.20 per share for each quarter of 2021. On February 1, 2023, we announced that our Board of Directors had declared a cash dividend of $0.40 per share of our common stock.
Dividends to Shareholders Our Board of Directors declared a cash dividend of $0.40 per share for each quarter of 2023 and declared a cash dividend of $0.30 per share for each quarter of 2022. 26 On January 31, 2024, we announced that our Board of Directors had declared a cash dividend of $0.52 per share of our common stock.
While our investments in real estate, equipment, and technology can increase our costs in the short-term, we believe these investments are necessary to support our continued long-term growth and strategic initiatives. Purchased transportation expense decreased $27.7 million, or 14.9%, in 2022 as compared to 2021.
While our investments in real estate, equipment, and technology can increase our short-term costs, we believe these investments are necessary to support our continued long-term growth and strategic initiatives. Purchased transportation expense decreased $36.6 million, or 23.1%, in 2023 as compared to 2022.
The increases in depreciation and amortization costs were due primarily to the assets acquired as part of our 2021 and 2022 capital expenditure programs. We believe depreciation costs will increase in future periods based on our 2023 capital expenditure plan.
Depreciation and amortization increased $48.4 million, or 17.5%, in 2023 as compared to 2022. The increases in depreciation and amortization costs were due primarily to the assets acquired as part of our 2022 and 2023 capital expenditure programs. We believe depreciation costs will continue to increase in future periods based on our 2024 capital expenditure plan.
Financing Agreements Note Agreement The Note Agreement, which is uncommitted and subject to Prudential’s sole discretion, provides for the issuance of senior promissory notes with an aggregate principal amount of up to $350.0 million through May 4, 2023.
Financing Agreements Note Agreement The Note Agreement, which is uncommitted and subject to Prudential’s sole discretion, provides for the issuance of senior promissory notes with an aggregate principal amount of up to $350.0 million through March 22, 2026. On May 4, 2020, we issued $100.0 million aggregate principal amount of senior promissory notes (the “Series B Notes”).
Our diesel fuel costs, excluding fuel taxes, represent the largest component of operating supplies and expenses, and can vary based on both the average price per gallon and consumption. Our average cost per gallon of diesel fuel increased 68.2% in 2022 as compared to 2021.
The cost of diesel fuel, excluding fuel taxes, represents the largest component of operating supplies and expenses, and can vary based on both the average price per gallon and consumption. Our average cost per gallon of diesel fuel decreased 19.8% in 2023 as compared to 2022.
Capital Expenditures The table below sets forth our net capital expenditures for property and equipment, including those obtained through noncash transactions, for the years ended December 31, 2022 and 2021: Year Ended December 31, (In thousands) 2022 2021 Land and structures $ 299,529 $ 252,155 Tractors 148,719 130,772 Trailers 216,697 140,595 Technology 33,783 17,139 Other equipment and assets 68,920 25,450 Less: Proceeds from sales (22,096 ) (19,548 ) Total $ 745,552 $ 546,563 Our capital expenditures vary based upon the projected increase in the number and size of our service center facilities necessary to support our plan for long-term growth, our planned tractor and trailer replacement cycle, and forecasted tonnage and shipment growth.
Capital Expenditures The table below sets forth our net capital expenditures for property and equipment, including those obtained through noncash transactions, for the years ended December 31, 2023 and 2022: Year Ended December 31, (In thousands) 2023 2022 Land and structures $ 291,070 $ 299,529 Tractors 203,417 148,719 Trailers 181,534 216,697 Technology 44,358 33,783 Other equipment and assets 36,930 68,920 Less: Proceeds from sales (48,637 ) (22,096 ) Total $ 708,672 $ 745,552 Our capital expenditures vary based upon the projected increase in the number and size of our service center facilities necessary to support our plan for long-term growth, our planned tractor and trailer replacement cycle, and forecasted tonnage and shipment growth.
(“Prudential”) and certain affiliates and managed accounts of Prudential, which we entered into on May 4, 2020 (the “Note Agreement”). Our Credit Agreement and Note Agreement are described in more detail below under “Financing Arrangements.” We believe we also have sufficient access to debt and equity markets to provide other sources of liquidity, if needed.
(“Prudential”) and certain affiliates and managed accounts of Prudential, as amended by the First Amendment dated March 22, 2023 (as amended, the “Note Agreement”). The Credit Agreement and the Note Agreement are described in more detail below under “Financing Arrangements.” We believe we also have sufficient access to debt and equity markets to provide other sources of liquidity, if needed.
The dividend is payable on March 15, 2023 to shareholders of record at the close of business on March 1, 2023.
The dividend is payable on March 20, 2024 to shareholders of record at the close of business on March 6, 2024.
Letter of credit fees equal to the applicable margin for LIBOR loans are charged quarterly in arrears on the daily average aggregate stated amount of all letters of credit outstanding during the quarter.
The applicable margin for each of the foregoing options is dependent upon our consolidated debt to consolidated total capitalization ratio. Letter of credit fees equal to the applicable margin for SOFR loans are charged quarterly in arrears on the daily average aggregate stated amount of all letters of credit outstanding during the quarter.
Shares of our common stock repurchased under our repurchase programs are canceled at the time of repurchase and are classified as authorized but unissued shares of our common stock. As of December 31, 2022, we had $679.1 million remaining authorized under the 2021 Repurchase Program.
Shares of our common stock repurchased under our repurchase programs are canceled at the time of repurchase and are classified as authorized but unissued shares of our common stock.
However, we do not believe inflation has had a material adverse effect on our results of operations for any of the past three years. Related Party Transactions Family Relationships In August 2022, we entered into an agreement with David S. Congdon, Executive Chairman of our Board of Directors, to terminate the employment agreement between the Company and Mr. Congdon.
However, we do not believe inflation has had a material adverse effect on our results of operations for any of the past three years. Related Party Transactions Family Relationships John R. Congdon, Jr., a member of our Board of Directors, is the cousin of David S. Congdon, Executive Chairman of our Board of Directors.
At our option, borrowings under the Credit Agreement bear interest at either: (i) LIBOR (including applicable successor provisions) plus an applicable margin (based on our ratio of net debt-to-total capitalization) that ranges from 1.000% to 1.375%; or (ii) a Base Rate, as defined in the Credit Agreement, plus an applicable margin (based on our ratio of net debt-to-total capitalization) that ranges from 0.000% to 0.375%.
At our option, borrowings under the Credit Agreement bear interest at either: (i) the Secured Overnight Financing Rate (SOFR) plus the Term SOFR Adjustment, as defined in the Credit Agreement, equal to 0.100%, plus an applicable margin that ranges from 1.000% to 1.375%; or (ii) a Base Rate, as defined in the Credit Agreement, plus an applicable margin that ranges from 0.000% to 0.375%.
The 2021 Repurchase Program, which does not have an expiration date, began after the completion of the 2020 Repurchase Program in January 2022. Under our repurchase programs, we may repurchase shares from time to time in open market purchases or through privately negotiated transactions.
The new repurchase program, which does not have an expiration date, will be effective upon the completion of our 2021 Repurchase Program. At December 31, 2023, our 2021 Repurchase Program had $225.4 million remaining authorized. Under our repurchase programs, we may repurchase shares from time to time in open market purchases or through privately negotiated transactions.
Liquidity and Capital Resources A summary of our cash flows is presented below: (In thousands) 2022 2021 Cash and cash equivalents at beginning of year $ 462,564 $ 401,430 Cash flows provided by (used in): Operating activities 1,691,582 1,212,606 Investing activities (547,472 ) (455,288 ) Financing activities (1,420,362 ) (696,184 ) (Decrease) increase in cash and cash equivalents (276,252 ) 61,134 Cash and cash equivalents at end of year $ 186,312 $ 462,564 The increase in our cash flows provided by operating activities during 2022 as compared to 2021 was primarily due to an increase in our income before income taxes of $452.9 million and fluctuations in certain working capital accounts.
Liquidity and Capital Resources A summary of our cash flows is presented below: (In thousands) 2023 2022 Cash and cash equivalents at beginning of year $ 186,312 $ 462,564 Cash flows provided by (used in): Operating activities 1,569,135 1,691,582 Investing activities (659,820 ) (547,472 ) Financing activities (661,828 ) (1,420,362 ) Increase (decrease) in cash and cash equivalents 247,487 (276,252 ) Cash and cash equivalents at end of year $ 433,799 $ 186,312 The change in our cash flows provided by operating activities during 2023 as compared to 2022 was due to the $137.7 million decrease in net income as well as the $33.2 million decrease in certain other working capital accounts.
Changes in our capital expenditure plans are more fully described below under “ Capital Expenditures ”. The increase in our cash flows used in financing activities during 2022 as compared to 2021 was due primarily to higher repurchases of our common stock, as well as an increase in dividend payments to our shareholders.
Changes in our capital expenditures are more fully described below in “Capital Expenditures.” The change in our cash flows used in financing activities during 2023 as compared to 2022 was primarily due to the $823.6 million decrease in funds used for repurchases of our common stock.
The increase in our cash flows used in investing activities during 2022 as compared to 2021 was primarily due to increases in property and equipment purchases under our capital expenditure plan, which was partially offset by the timing of purchases and maturities of short-term investments.
These decreases were partially offset by a $48.4 million increase in depreciation and amortization expense. The change in our cash flows used in investing activities during 2023 as compared to 2022 was primarily due to the timing of purchases and maturities of short-term investments, which was partially offset by a net reduction in capital expenditures.
Operating Costs and Other Expenses Salaries, wages, and benefits increased $248.9 million, or 10.1%, in 2022 as compared to 2021, due to a $188.5 million increase in the costs attributable to salaries and wages and a $60.4 million increase in employee benefit costs.
Operating Costs and Other Expenses Salaries, wages, and benefits decreased $87.2 million, or 3.2%, in 2023 as compared to 2022, due to an $83.1 million decrease in the costs attributable to salaries and wages and a $4.1 million decrease in employee benefit costs.
Pursuant to the Note Agreement, we issued $100.0 million aggregate principal amount of senior promissory notes (the “Series B Notes”) on May 4, 2020. Borrowing availability under the Note Agreement is reduced by the outstanding amount of the existing Series B Notes, and all other senior promissory notes issued pursuant to the Note Agreement.
Borrowing availability under the Note Agreement is reduced by the outstanding amount of the existing Series B Notes, and all other senior promissory notes issued pursuant to the Note Agreement. The Series B Notes bear interest at 3.10% per annum and mature on May 4, 2027, unless prepaid.
Contractual Obligations The following table summarizes our significant contractual obligations as of December 31, 2022: Payments due by period Contractual Obligations (1) Less than More than (In thousands) Total 1 year 1-3 years 3-5 years 5 years Series B Notes $ 107,254 $ 22,691 $ 43,522 $ 41,041 $ — Operating lease obligations (2) 120,300 21,243 29,234 25,262 44,561 Purchase obligations and Other 186,680 160,776 22,151 3,753 Total $ 414,234 $ 204,710 $ 94,907 $ 70,056 $ 44,561 (1) Contractual obligations include principal and interest on our Series B Notes; leases consisting primarily of real estate and automotive leases; and purchase obligations relating to non-cancellable purchase orders for (i) equipment scheduled for delivery in 2023, and (ii) information technology agreements.
Contractual Obligations The following table summarizes our significant contractual obligations as of December 31, 2023: Payments due by period Contractual Obligations (1) Less than More than (In thousands) Total 1 year 1-3 years 3-5 years 5 years Series B Notes $ 84,564 $ 22,072 $ 42,281 $ 20,211 $ — Operating lease obligations (2) 151,273 21,598 37,261 34,670 57,744 Purchase obligations and Other 38,056 25,266 12,790 — — Total $ 273,893 $ 68,936 $ 92,332 $ 54,881 $ 57,744 (1) Contractual obligations include principal and interest on our Series B Notes; leases consisting primarily of real estate and automotive leases; and purchase obligations relating to non-cancellable purchase orders for (i) equipment scheduled for delivery in 2024, and (ii) information technology agreements.
We have five primary sources of available liquidity: cash flows from operations, our existing cash and cash equivalents, short-term investments, available borrowings under our second amended and restated credit agreement with Wells Fargo Bank, National Association serving as administrative agent for the lenders, which we entered into on November 21, 2019 (the “Credit Agreement”), 24 and our Note Purchase and Private Shelf Agreement with PGIM, Inc.
Our return of capital to shareholders is more fully described below under “Stock Repurchase Program” and “Dividends to Shareholders.” Our long-term debt agreement is more fully described below under "Financing Arrangements." 25 We have four primary sources of available liquidity: cash flows from operations, our existing cash and cash equivalents, available borrowings under our third amended and restated credit agreement with Wells Fargo Bank, National Association serving as administrative agent for the lenders, dated March 22, 2023 (the “Credit Agreement”), and our Note Purchase and Private Shelf Agreement with PGIM, Inc.
In addition, our gallons consumed increased 4.1% in 2022 as compared to 2021 year due to an increase in miles driven. We do not use diesel fuel hedging instruments; therefore, our costs are subject to market price fluctuations.
In addition, our gallons consumed decreased 8.5% in 2023 as compared to 2022 due to a decrease in our miles driven. We do not use diesel fuel hedging instruments; therefore, our costs are subject to market price fluctuations. Our other operating supplies and expenses as a percent of revenue were generally consistent in 2023 as compared to 2022.
We recognize revenue for our performance obligations under our customer contracts over time, as our customers receive the benefits of our services in accordance with Accounting Standards Update (“ASU”) 2014-09. With respect to services not completed at the end of a reporting period, we use a percentage of completion method to allocate the appropriate revenue to each separate reporting period.
With respect to services not completed at the end of a reporting period, we use a percentage of completion method to allocate the appropriate revenue to each separate reporting period.
The increase in salaries and wages was due primarily to increases in the average number of active full-time employees during the year.
The decrease in salaries and wages was due primarily to decreases in the average number of active full-time employees during the year, as we balanced our workforce to align with our customers' shipping trends. Salaries and wages also decreased as a result of lower performance-based and discretionary bonus compensation.
Our productive labor costs, which include wages for drivers, platform employees, and fleet technicians, improved as a percent of revenue to 22.9% in 2022 compared to 25.1% in 2021. The improvements in our productive labor costs, as a percentage of revenue, reflect the leveraging effect of increases in our yield as well as our ongoing commitment to operating efficiently.
These decreases were partially offset by the annual wage increase provided to our employees at the beginning of both September 2022 and 2023. Our productive labor costs, which include wages for drivers, platform employees, and fleet technicians, increased as a percent of revenue to 23.6% in 2023 from to 22.9% in 2022.
As a result, net income and earnings per diluted share increased by 33.1% and 37.0%, respectively, in 2022 as compared to 2021. Revenue Revenue increased $1.0 billion, or 19.1%, in 2022 compared to 2021, due to an increase in LTL revenue per hundredweight and a slight increase in LTL tonnage.
As a result, our depreciation costs increased as a percent of revenue and contributed to the slight increase in our operating ratio to 72.0% for 2023. In addition, our net income and diluted earnings per share decreased by 10.0% and 7.6%, respectively, as compared to 2022. Revenue Revenue decreased $393.9 million, or 6.3%, in 2023 compared to 2022.
Stock Repurchase Program On May 1, 2020, we announced that our Board of Directors had approved a two-year stock repurchase program authorizing us to repurchase up to an aggregate of $700.0 million of our outstanding common stock (the “2020 Repurchase Program”). The 2020 Repurchase Program became effective upon the termination of our $350.0 million repurchase program on May 29, 2020.
The 2021 Repurchase Program, which does not have an expiration date, began after completion of our prior repurchase program in January 2022. On July 26, 2023, we announced that our Board of Directors had approved a new stock repurchase program authorizing us to repurchase up to an aggregate of $3.0 billion of our outstanding common stock.
Our other salaries and wages as a percent of revenue also decreased to 9.0% in 2022 as compared to 9.3% in 2021. 23 The increase in the costs attributable to employee benefits of $60.4 million, or 9.1%, includes the impact of the increase in the number of full-time employees eligible for our benefits and increases in certain higher retirement benefits costs directly linked to our net income.
Our other salaries and wages as a percent of revenue remained consistent between the comparable periods. 24 The cost attributable to employee benefits decreased $4.1 million, or 0.6%, in 2023 compared to 2022. Our employee benefit costs increased as a percent of salaries and wages to 37.5% in 2023 from 36.2% in 2022.
Our LTL revenue per hundredweight increased 18.2% in 2022 compared to 2021. This increase reflects the impact of higher fuel surcharges associated with the significant increase in diesel fuel prices as well as the ongoing commitment to our long-term yield management strategy. Excluding fuel surcharges, LTL revenue per hundredweight increased 8.5% in 2022 as compared to 2021.
Our LTL revenue per hundredweight includes the impact of lower fuel surcharges resulting from a decline in the average price of diesel fuel for the comparable periods. Excluding fuel surcharges, LTL revenue per hundredweight increased 8.3% in 2023 as compared to 2022.
The Series B Notes bear an annual interest rate of 3.10% and mature on May 4, 2027, unless prepaid. Principal payments are required annually beginning on May 4, 2023 in equal installments of $20.0 million through May 4, 2027.
Our first principal payment of $20.0 million was paid on May 4, 2023. The remaining $80.0 million will be paid in four equal annual installments of $20.0 million through May 4, 2027.
Operating supplies and expenses increased $285.3 million, or 50.3%, in 2022 as compared to 2021, due primarily to an increase in our costs for diesel fuel used in our vehicles, as well as other petroleum-based products.
This increase in employee benefit costs as a percent of salaries and wages was partially offset by lower retirement benefit plan costs directly linked to our net income. Operating supplies and expenses decreased $134.6 million, or 15.8%, in 2023 as compared to 2022, due primarily to decreases in our costs for diesel fuel used in our vehicles.
We believe our focus on obtaining an appropriate yield is necessary to offset rising operating costs and also allows us to invest in opportunities that can improve the quality of our service and provide capacity for future growth. January 2023 Update Revenue per day increased 4.2% in January 2023 compared to the same month last year.
We believe the increase in our LTL revenue-per-hundredweight metrics was driven by the ongoing execution of our yield management strategy, which is focused on obtaining price increases necessary to offset our cost inflation and support our continued investments in capacity and technology. January 2024 Update Revenue per day decreased 2.7% in January 2024 compared to the same month last year.