Exhibit 12.1

STATEMENT REGARDING COMPUTATION OF RATIOS



|                                                                     |  |                                                |  |         |  |         |  |         |  |        |  |      
|-------------------------------------------------------------------- |  | ---------------------------------------------- |  | ------- |  | ------- |  | ------- |  | ------ |  | -----
|                                                                     |  | FISCAL YEAR ENDED DECEMBER 31,                
|                                                                     |  | 2006                                           |  | 2005    |  | 2004    |  | 2003    |  | 2002   |  | 2001 
|                                                                     |  | (Dollars in Thousands; percentages annualized)
|Fixed Charges:                                                       |  |                                                |  |         |  |         |  |         |  |        |  |      
|Interest Expense                                                     |  | 52,472                                         |  | 33,971  |  | 4,729   |  | 6,534   |  | 7,579  |  | 317  
|Assumed interest element in rent                                     |  | 1,693                                          |  | 1,513   |  | 888     |  | 459     |  | 427    |  | 324  
|                                                                     |  |                                                |  |         |  |         |  |         |  |        |  |      
|Total fixed charges:                                                 |  | 54,165                                         |  | 35,484  |  | 5,617   |  | 6,993   |  | 8,006  |  | 641  
|Preference security dividend                                         |  |                                               |  |        |  | 6,775   |  | 6,591   |  | 6,412  |  | 222  
|                                                                     |  |                                                |  |         |  |         |  |         |  |        |  |      
|Total fixed charges and preference security dividends                |  | 54,165                                         |  | 35,484  |  | 12,392  |  | 13,584  |  | 14,418 |  | 863  
|Earnings:                                                            |  |                                                |  |         |  |         |  |         |  |        |  |      
|Income before income taxes                                           |  | 167,930                                        |  | 269,843 |  | 157,069 |  | 188,710 |  | 9,032  |  | 4,412
|Fixed charges (per above)                                            |  | 54,165                                         |  | 35,484  |  | 5,617   |  | 6,993   |  | 8,006  |  | 641  
|                                                                     |  |                                                |  |         |  |         |  |         |  |        |  |      
|Total earnings                                                       |  | 222,095                                        |  | 305,327 |  | 162,686 |  | 195,703 |  | 17,038 |  | 5,053
|                                                                     |  |                                                |  |         |  |         |  |         |  |        |  |      
|Ratio of earnings to fixed charges and preference security dividends |  | 4.1 X                                          |  | 8.6 X   |  | 13.1 X  |  | 14.4 X  |  | 1.2 X  |  | 5.9 X