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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Revenues: |  |  |  |
Net premiums | $ 2,480,451 | $ 2,346,945 | $ 4,846,147 | $ 4,503,950
Investment income, net of related expenses | 518,538 | 507,666 | 1,032,902 | 924,932
Investment related gains (losses), net: |  |  |  |
Other-than-temporary impairments on fixed maturity securities | (3,401) | (846) | (20,590) | (34,663)
Other investment related gains (losses), net | 59,696 | 119,110 | 137,408 | 32,041
Total investment related gains (losses), net | 56,295 | 118,264 | 116,818 | (2,622)
Other revenues | 73,992 | 66,193 | 142,149 | 125,376
Total revenues | 3,129,276 | 3,039,068 | 6,138,016 | 5,551,636
Benefits and Expenses: |  |  |  |
Claims and other policy benefits | 2,164,363 | 1,997,502 | 4,270,508 | 3,884,266
Interest credited | 115,285 | 95,849 | 222,969 | 183,754
Policy acquisition costs and other insurance expenses | 319,832 | 405,681 | 699,221 | 639,444
Other operating expenses | 154,356 | 159,895 | 312,862 | 317,319
Interest expense | 29,352 | 20,331 | 71,754 | 53,138
Collateral finance and securitization expense | 6,773 | 6,587 | 13,543 | 12,912
Total benefits and expenses | 2,789,961 | 2,685,845 | 5,590,857 | 5,090,833
Income before income taxes | 339,315 | 353,223 | 547,159 | 460,803
Provision for income taxes | 107,125 | 117,120 | 169,457 | 148,228
Net income | $ 232,190 | $ 236,103 | $ 377,702 | $ 312,575
Earnings per share: |  |  |  |
Basic earnings per share | $ 3.60 | $ 3.68 | $ 5.86 | $ 4.86
Diluted earnings per share | 3.54 | 3.64 | 5.76 | 4.81
Dividends declared per share | $ 0.41 | $ 0.37 | $ 0.82 | $ 0.74

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