| Schedule of Quarterly Financial Information |
Summarized data for each interim period for the years ended December 31, 2011 and 2010 is as follows (in thousands, except per share data): | | | | | | | | | | | | | | | | | | | | Three Months Ended | | | March 31,
2011 | | June 30,
2011 | | September 30,
2011 | | December 31,
2011 | Total revenues | | $ | 1,194,377 |
| | $ | 1,209,453 |
| | $ | 1,205,388 |
| | $ | 1,238,164 |
| Income from operations | | 145,337 |
| | 210,255 |
| | 176,831 |
| | 215,115 |
| Net income | | 56,378 |
| | 84,335 |
| | 69,326 |
| | 91,271 |
| Net income per common share - basic | | $ | 0.16 |
| | $ | 0.23 |
| | $ | 0.19 |
| | $ | 0.25 |
| Net income per common share - diluted | | $ | 0.15 |
| | $ | 0.23 |
| | $ | 0.19 |
| | $ | 0.25 |
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| | | | | | | | | | | | | | | | | | | | Three Months Ended | | | March 31,
2010 | | June 30,
2010 | | September 30,
2010 | | December 31,
2010 | Total revenues | | $ | 970,503 |
| | $ | 1,012,536 |
| | $ | 1,020,789 |
| | $ | 1,065,525 |
| Income from operations | | 105,231 |
| | 198,412 |
| | 207,934 |
| | 207,321 |
| Net income | | 22,661 |
| | 79,915 |
| | 77,287 |
| | 13,552 |
| Net income per common share - basic | | $ | 0.06 |
| | $ | 0.22 |
| | $ | 0.22 |
| | $ | 0.04 |
| Net income per common share - diluted | | $ | 0.06 |
| | $ | 0.22 |
| | $ | 0.22 |
| | $ | 0.04 |
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