| Exhibit      12.1                                                                                                                 |   |
|-----------------------------------------------------------------------------------------------------------------------------------|--------|
| Statement      of Computation of Ratio of Earnings to Fixed Charges                                                               |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |   | Three      Months |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |   | Ended |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |   | March      31, |   |
|                                                                                                                              |   | 2004 |   |   | 2005 |   |   | 2006 |   |   | 2007 |   |   | 2008 |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                              |   | (in      thousands) |   |
| Earnings                                                                                                                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   Income      From Continuing Operations *                                                                              |   |   | 112,658 |   |   |   | 138,639 |   |   |   | 158,538 |   |   |   | 132,701 |   |   |   | 45,296 |   |
| Fixed      Charges                                                                                                                |   | 80,695 |   |   |   | 93,414 |   |   |   | 101,905 |   |   |   | 119,603 |   |   |   | 44,703 |   |
| Distributed      Income of Equity Investment                                                                                      |   | 47,213 |   |   |   | 37,085 |   |   |   |  63,483 |   |   |   | 122,900 |   |   |   | 37,234 |   |
| Capitalized      Interest                                                                                                         |   |   | (4,227 | ) |   |   | (6,759 | ) |   |   | (10,681 | ) |   |   | (11,030 | ) |   |   | (4,408 | ) |
| Total      Earnings                                                                                                               |   |   | 236,339 |   |   |   | 262,379 |   |   |   | 313,245 |   |   |   | 364,174 |   |   |   | 122,825 |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fixed      Charges                                                                                                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest      Expense                                                                                                             |   |   | 72,053 |   |   |   | 81,861 |   |   |   | 86,171 |   |   |   | 101,223 |   |   |   | 38,571 |   |
| Capitalized      Interest                                                                                                         |   |   | 4,227 |   |   |   | 6,759 |   |   |   | 10,681 |   |   |   | 11,030 |   |   |   | 4,408 |   |
| Rental      Interest Factor                                                                                                       |   |   | 4,415 |   |   |   | 4,794 |   |   |   | 5,053 |   |   |   | 7,350 |   |   |   | 1,724 |   |
| Total      Fixed Charges                                                                                                          |   |   | 80,695 |   |   |   | 93,414 |   |   |   | 101,905 |   |   |   | 119,603 |   |   |   | 44,703 |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ratio:  Earnings      / Fixed Charges                                                                                   |   |   | 2.93 |   |   |   | 2.81 |   |   |   | 3.07 |   |   |   | 3.04 |   |   |   | 2.75 |   |
| ___________________________                                                                                                  |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| * Excludes      discontinued operations, gain on sale of assets, provision for taxes and      undistributed equity earnings. |   |
|                                                                                                                              |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |