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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010
Revenues: |  |  |  |
Rental income | $ 102,546 | $ 80,961 | $ 300,527 | $ 242,173
Residents fees and services | 10,731 |  | 11,575 |
Total revenues | 113,277 | 80,961 | 312,102 | 242,173
Expenses: |  |  |  |
Depreciation | 28,824 | 22,505 | 82,120 | 67,139
Property operating expenses | 19,754 | 4,599 | 40,572 | 13,138
General and administrative | 6,608 | 5,545 | 19,618 | 16,439
Acquisition related costs | 2,620 | 286 | 6,547 | 725
Impairment of assets | 1,028 |  | 1,194 | 1,095
Total expenses | 58,834 | 32,935 | 150,051 | 98,536
Operating income | 54,443 | 48,026 | 162,051 | 143,637
Interest and other income | 462 | 203 | 971 | 703
Interest expense | (24,730) | (20,226) | (70,837) | (59,155)
Loss on early extinguishment of debt |  |  | (427) | (2,433)
Gain on sale of properties |  | 109 | 21,315 | 109
Equity in earnings (losses) of an investee | 28 | 35 | 111 | (17)
Income before income tax expense | 30,203 | 28,147 | 113,184 | 82,844
Income tax expense | (207) | (69) | (365) | (223)
Net income | $ 29,996 | $ 28,078 | $ 112,819 | $ 82,621
Weighted average shares outstanding (in shares) | 153,385 | 127,423 | 145,745 | 127,404
Net income per share (in dollars per share) | $ 0.20 | $ 0.22 | $ 0.77 | $ 0.65

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