##### 



Exhibit 12.1

Statement of Computation of Ratio of Earnings to Fixed Charges

|                                |                                         |                     |      |                          |        |             |      |        |        |      |      |        |         |                    |      |        |         |  |      |        |         |  |      |        |         | 
|------------------------------- | --------------------------------------- | ------------------- | ---- | ------------------------ | ------ | ----------- | ---- | ------ | ------ | ---- | ---- | ------ | ------- | ------------------ | ---- | ------ | ------- |  | ---- | ------ | ------- |  | ---- | ------ | ------- | 
|                                |                                         |                     |      | Years Ended December 31, |        | Nine months
|                                |                                         |                     |      |                          |        | ended      
|                                |                                         |                     |      | 1997                     |        | 1998        |      | 1999   |        | 2000 |      | 2001   |         | September 30, 2002
|                                |                                         |                     |      |                          |        |             |      |        |        |      |      |        |         |                   
|                                |                                         |                     |      | (in thousands)           |        |             |      |       
|Earnings                        |                                         |                     |      |                          |        |             |      |        |        |      |      |        |         |                    |      |        |         |  |      |        |         |  |      |       
|                                | Income From Continuing Operations *     |                     |      | 61,925                   |        |             |      | 53,885 |        |      |      | 72,856 |         |                    |      | 65,951 |         |  |      | 92,533 |         |  |      | 74,145 |        
|                                | Fixed Charges                           |                     |      | 35,458                   |        |             |      | 30,915 |        |      |      | 34,305 |         |                    |      | 55,621 |         |  |      | 72,217 |         |  |      | 58,361 |        
|                                | Distributed Income of
Equity Investment |                     |      |                         |        |             |      |       |        |      |      |       |         |                    |      |       |         |  |      | 40,800 |         |  |      | 24,038 |        
|                                | Capitalized Interest                    |                     |      | (1,478                   | )      |             |      | (795   | )      |      |      | (2,133 | )       |                    |      | (4,559 | )       |  |      | (4,000 | )       |  |      | (4,476 | )      
|                                |                                         |                     |      |                          |        |             |      |        |        |      |      |        |         |                    |      |        |         |  |      |        |         |  |      |       
|                                |                                         | Total Earnings      |      |                          | 95,905 |             |      |        | 84,005 |      |      |        | 105,028 |                    |      |        | 117,013 |  |      |        | 201,550 |  |      |        | 152,068 | 
|                                |                                         |                     |      |                          |        |             |      |        |        |      |      |        |         |                    |      |        |         |  |      |        |         |  |      |       
|Fixed Charges                   |                                         |                     |      |                          |        |             |      |        |        |      |      |        |         |                    |      |        |         |  |      |        |         |  |      |       
|                                | Interest Expense                        |                     |      | 33,707                   |        |             |      | 29,784 |        |      |      | 31,563 |         |                    |      | 48,982 |         |  |      | 66,057 |         |  |      | 53,379 |        
|                                | Capitalized Interest                    |                     |      | 1,478                    |        |             |      | 795    |        |      |      | 2,133  |         |                    |      | 4,559  |         |  |      | 4,000  |         |  |      | 4,476  |        
|                                | Rental Interest Factor                  |                     |      | 273                      |        |             |      | 336    |        |      |      | 609    |         |                    |      | 2,080  |         |  |      | 2,160  |         |  |      | 506    |        
|                                |                                         |                     |      |                          |        |             |      |        |        |      |      |        |         |                    |      |        |         |  |      |        |         |  |      |       
|                                |                                         | Total Fixed Charges |      |                          | 35,458 |             |      |        | 30,915 |      |      |        | 34,305  |                    |      |        | 55,621  |  |      |        | 72,217  |  |      |        | 58,361  | 
|                                |                                         |                     |      |                          |        |             |      |        |        |      |      |        |         |                    |      |        |         |  |      |        |         |  |      |       
|Ratio: Earnings / Fixed Charges |                                         |                     | 2.70 |                          |        |             | 2.72 |        |        |      | 3.06 |        |         |                    | 2.10 |        |         |  | 2.79 |        |         |  | 2.61 |       
|                                |                                         |                     |      |                          |        |             |      |        |        |      |      |        |         |                    |      |        |         |  |      |        |         |  |      |       

     Excludes minority interest, extraordinary loss and undistributed equity earnings.