Exhibit 12.1

Statement Regarding Computation of Ratio of Earnings to Fixed Charges



|                                                                                  |  |                          |       |      |   |       |  |      |       |      |   |       |  |   |      
|--------------------------------------------------------------------------------- |  | ------------------------ | ----- | ---- | - | ----- |  | ---- | ----- | ---- | - | ----- |  | - | -----
|                                                                                  |  | Years Ended December 31,
|                                                                                  |  | 2006                     |       | 2005 |   | 2004  |  | 2003 |       | 2002
|                                                                                  |  | (Dollars in millions)   
|Earnings calculation:                                                             |  |                          |       |      |   |       |  |      |       |      |   |       |  |   |      
|Income before income taxes                                                        |  | $                        | 309.7 |      | $ | 325.6 |  | $    | 292.0 |      | $ | 239.8 |  | $ | 172.0
|Fixed charges                                                                     |  |                          | 121.9 |      |   | 107.9 |  |      | 100.1 |      |   | 98.0  |  |   | 83.0 
|                                                                                  |  |                          |       |      |   |       |  |      |       |      |   |       |  |   |      
|Earnings                                                                          |  | $                        | 431.6 |      | $ | 433.5 |  | $    | 392.1 |      | $ | 337.8 |  | $ | 255.0
|                                                                                  |  |                          |       |      |   |       |  |      |       |      |   |       |  |   |      
|                                                                                  |  |                          |       |      |  
|Fixed charges calculation:                                                        |  |                          |       |      |   |       |  |      |       |      |   |       |  |   |      
|Other interest expense including capital lease interest but excluding senior note |  | $                        | 1.0   |      | $ | 1.1   |  | $    | 1.1   |      | $ | 0.9   |  | $ | 1.3  
|Amortization of senior note                                                       |  |                          | 17.5  |      |   | 17.5  |  |      | 17.5  |      |   | 17.5  |  |   | 4.6  
|Interest credited                                                                 |  |                          | 97.7  |      |   | 84.0  |  |      | 76.5  |      |   | 75.0  |  |   | 72.9 
|Portion of rental expense representing an interest factor (1)                     |  |                          | 5.7   |      |   | 5.3   |  |      | 5.0   |      |   | 4.6   |  |   | 4.2  
|                                                                                  |  |                          |       |      |   |       |  |      |       |      |   |       |  |   |      
|Total fixed charges                                                               |  | $                        | 121.9 |      | $ | 107.9 |  | $    | 100.1 |      | $ | 98.0  |  | $ | 83.0 
|                                                                                  |  |                          |       |      |   |       |  |      |       |      |   |       |  |   |      
|Ratio of earnings to fixed charges                                                |  |                          | 3.5 x |      |   | 4.0 x |  |      | 3.9 x |      |   | 3.4 x |  |   | 3.1 x

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|(1) | Interest portion of operating leases is assumed to be 28 percent of the lease expense.
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