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Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Operating revenue | $ 638,456 | $ 603,679 | $ 516,920
Operating expenses (income): |  |  |
Salaries, wages and benefits | 163,242 | 147,646 | 131,519
Purchased transportation | 124,269 | 120,332 | 110,408
Fuel and fuel taxes | 163,596 | 155,595 | 114,927
Supplies and maintenance | 39,919 | 40,311 | 35,218
Depreciation | 60,904 | 57,531 | 51,916
Operating taxes and licenses | 6,741 | 6,373 | 6,222
Insurance and claims | 20,718 | 18,170 | 16,573
Communications and utilities | 4,939 | 4,605 | 3,964
Gain on disposition of revenue equipment | (5,302) | (3,800) | (1,110)
Other | 13,577 | 13,886 | 11,994
| 592,603 | 560,649 | 481,631
Operating income | 45,853 | 43,030 | 35,289
Net interest income | (48) | (24) | (26)
Income before income taxes | 45,901 | 43,054 | 35,315
Less: Income before income taxes attributable to noncontrolling interest | 497 | 807 | 631
Income before income taxes attributable to Marten Transport, Ltd. | 45,404 | 42,247 | 34,684
Provision for income taxes | 18,137 | 17,962 | 14,942
Net income | $ 27,267 | $ 24,285 | $ 19,742
Basic earnings per common share (in Dollars per share) | $ 1.24 | $ 1.10 | $ 0.90
Diluted earnings per common share (in Dollars per share) | $ 1.23 | $ 1.10 | $ 0.90
Dividends paid per common share (in Dollars per share) | $ 0.845 | $ 0.08 | $ 0.04

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