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|                                                                  |   | Year      Ended December 31, |    |
|-----------------------------------------------------------------------|--------|------------------------------|---------|
|                                                                  |   | 2007                         |    |   | 2006 |   |   | 2005 |   |   | 2004 |   |   | 2003 |   |
| Fixed      charges, as defined by the Securities and Exchange         |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |
| Commission:                                                           |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                  |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest      on long-term debt                                       |   | $                            | 38,534  |   |   | $ | 40,541 |   |   | $ | 39,408 |   |   | $ | 36,801 |   |   | $ | 48,067 |   |
| Amortization      of debt premium, discount and expenses              |   |                         | 4,618   |   |   |   | 2,871 |   |   |   | 2,856 |   |   |   | 3,036 |   |   |   | 2,958 |   |
| Other      interest                                                   |   |                         | 9,799   |   |   |   | 3,956 |   |   |   | 1,921 |   |   |   | 1,719 |   |   |   | 3,859 |   |
| Estimated      interest factor of lease rental charges                |   |                         | 16,630  |   |   |   | 16,448 |   |   |   | 16,954 |   |   |   | 16,406 |   |   |   | 17,006 |   |
| Interest      capitalized                                             |   |                         | 3,738   |   |   |   | 1,946 |   |   |   | 1,054 |   |   |   | 752 |   |   |   | 909 |   |
|      Total      Fixed Charges                |   |                         | 73,319  |   |   |   | 65,762 |   |   |   | 62,193 |   |   |   | 58,714 |   |   |   | 72,800 |   |
|                                                                  |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Preferred      dividend requirements                                  |   |                         | 781     |   |   |   | 815 |   |   |   | 746 |   |   |   | 891 |   |   |   | 859 |   |
|                                                                  |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total      Fixed Charges and Preferred Dividend Requirements          |   | $                            | 74,101  |   |   | $ | 66,577 |   |   | $ | 62,938 |   |   | $ | 59,605 |   |   | $ | 73,659 |   |
|                                                                  |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                  |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Earnings,      as defined by the Securities and Exchange              |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Commission:                                                           |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                  |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Earnings      before income taxes                                     |   | $                            | 34,611  |   |   | $ | 89,657 |   |   | $ | 51,034 |   |   | $ | 114,690 |   |   | $ | 74,400 |   |
| Fixed      charges as above                                           |   |                         | 73,319  |   |   |   | 65,762 |   |   |   | 62,193 |   |   |   | 58,714 |   |   |   | 72,800 |   |
| Interest      capitalized                                             |   |                         | (3,738  | ) |   |   | (1,946 | ) |   |   | (1,054 | ) |   |   | (752 | ) |   |   | (909 | ) |
|                                                                  |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Earnings      Available for Fixed Charges                             |   | $                            | 104,192 |   |   | $ | 153,473 |   |   | $ | 112,173 |   |   | $ | 172,652 |   |   | $ | 146,291 |   |
|                                                                  |   |                         |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ratio      of Earnings to Fixed Charges and Preferred Stock Dividends |   |                         | 1.41    |   |   |   | 2.31 |   |   |   | 1.78 |   |   |   | 2.90 |   |   |   | 1.99 |   |

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