|                                                                                                   |         | Year ended December 31, |        |
|--------------------------------------------------------------------------------------------------------|--------------|-------------------------|-------------|
|                                                                                                   |    | 2010                    |        |   | 2009 |   |   | 2008 |   |
| Basic Earnings Per Share                                                                               |    |                    |        |   |   |   |   |   |   |   |   |   |
| Net Income (Loss) Available to Common Stockholders                                                     |    | $                       | 30,111      |   |   | $ | 21,458 |   |   | $ | (26,227 | ) |
| Weighted-Average Shares of Common Stock                                                                |    |                    | 197,366,978 |   |   |   | 153,630,446 |   |   |   | 152,632,586 |   |
| Basic Earnings Per Share                                                                               |    | $                       | 0.15        |   |   | $ | 0.14 |   |   | $ | (0.17 | ) |
|                                                                                                   |         |                    |        |   |   |   |   |   |   |   |   |   |
| Diluted Earnings Per Share                                                                             |    |                    |        |   |   |   |   |   |   |   |   |   |
| Net Income (Loss) Available to Common Stockholders                                                     |    | $                       | 30,111      |   |   | $ | 21,458 |   |   | $ | (26,227 | ) |
| Weighted-Average Shares of Common Stock and Other Potentially Dilutive Securities Outstanding:         |    |                    |        |   |   |   |   |   |   |   |   |   |
| Common Stock                                                                                           |    |                    | 197,366,978 |   |   |   | 153,630,446 |   |   |   | 152,632,586 |   |
| Incremental Shares Under Stock Compensation Plans and Issuable Upon Conversion of Convertible Notes(1) |    |                    | 1,441,933   |   |   |   | 1,755,817 |   |   |   | —   |   |
| Convertible Senior Notes                                                                               |         |                    | 6,475,088   |   |   |   | —   |   |   |   | —   |   |
| Total                                                                                                  |    |                    | 205,283,999 |   |   |   | 155,386,263 |   |   |   | 152,632,586 |   |
|                                                                                                   |         |                    |        |   |   |   |   |   |   |   |   |   |
| Diluted Earnings Per Share                                                                             |    | $                       | 0.15        |   |   | $ | 0.14 |   |   | $ | (0.17 | ) |

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| (1) | Includes the incremental effect of stock options outstanding computed under the treasury stock method, as applicable. |
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