Exhibit 11



STATEMENT OF COMPUTATION OF PER SHARE EARNINGS



The following computations set forth the calculation of basic and diluted net income per common share and common shares equivalents for the three-month periods ended
March 31, 2005 and 2004:



|                                                                                   |  |                              |            |      |   |           
|---------------------------------------------------------------------------------- |  | ---------------------------- | ---------- | ---- | - | ----------
|                                                                                   |  | Three Months Ended March 31,
|                                                                                   |  | 2005                         |            | 2004
|Net income                                                                         |  | $                            | 21,570,344 |      | $ | 25,476,887
|                                                                                   |  |                              |            |      |   |           
|Weighted average number of common shares outstanding                               |  |                              | 80,165,952 |      |   | 80,097,071
|                                                                                   |  |                              |            |      |   |           
|Net income per common share - Basic                                                |  | $                            | 0.27       |      | $ | 0.32      
|                                                                                   |  |                              |            |      |   |           
|                                                                                   | 
|                                                                                   |  | Three Months Ended March 31,
|                                                                                   |  | 2005                         |            | 2004
|Net income                                                                         |  | $                            | 21,570,344 |      | $ | 25,476,887
|                                                                                   |  |                              |            |      |   |           
|Weighted average number of common shares outstanding                               |  |                              | 80,165,952 |      |   | 80,097,071
|                                                                                   |  |                             
|Common share equivalents resulting from:                                           |  |                              |            |      |   |           
|Dilutive stock options                                                             |  |                              | 515,006    |      |   | 555,130   
|                                                                                   |  |                              |            |      |   |           
|Adjusted weighted average number of common and common equilvant shares outstanding |  |                              | 80,680,958 |      |   | 80,652,201
|                                                                                   |  |                              |            |      |   |           
|Net income per common share - Diluted                                              |  | $                            | 0.27       |      | $ | 0.32      
|                                                                                   |  |                              |            |      |   |