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EXHIBIT 11  COMPUTATION OF EARNINGS PER SHARE

In thousands of dollars, except per share data

|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |         |       | 
|---------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------- | ------------------------------------------------------------------------------------ | ------- | ------------------------- | ------ | --------------------------- | ----------- | ----------- | ------ | ---- | ------- | ------- | ----- | - | ------- | ------- | ----- | 
|                                                                                                                 |                                                                     |                                                                                      |         | Six Months Ended June 30, |        | Three Months Ended June 30,
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                            
|                                                                                                                 |                                                                     |                                                                                      |         | 2003                      |        | 2002                        |             | 2003        |        | 2002
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |     
|Numerator:                                                                                                       |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|                                                                                                                 | Income before cumulative effect of a
change in accounting principle |                                                                                      | $       | 322,346                   |        |                             | $           | 328,365     |        |      | $       | 251,300 |       |   | $       | 238,036 |      
|                                                                                                                 | Cumulative effect of a change in
accounting principle               |                                                                                      |         |                          |        |                             |             | (16,778,526 | )      |      |         |        |       |   |         |        |      
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|                                                                                                                 | Net income (loss)                                                   |                                                                                      |         | 322,346                   |        |                             |             | (16,450,161 | )      |      |         | 251,300 |       |   |         | 238,036 |      
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|                                                                                                                 | Effect of dilutive securities:                                      |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |         |      
|                                                                                                                 |                                                                     | Convertible debt  2.625% issued in 1998                                             |         |                           | 2,106  |                             |             |             | 4,679  |      |         |         |      |   |         |         | 2,340 | 
|                                                                                                                 |                                                                     | Convertible debt  1.5% issued in 1999                                               |         |                           |       |                             |             |             | 4,650  |      |         |         |      |   |         |         | 2,325 | 
|                                                                                                                 |                                                                     | LYONS  1998 issue                                                                   |         |                           | 1,446  | *                           |             |             | 2,379  | *    |         |         | 230   | * |         |         | 1,195 | 
|                                                                                                                 |                                                                     | Less: Anti-dilutive items                                                            |         |                           | (1,446 | )                           |             |             | (2,379 | )    |         |         | (230  | ) |         |         |      | 
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|Numerator for net income before cumulative
effect of a change in accounting principle
per common share  diluted |                                                                     | $                                                                                    | 324,452 |                           |        | $                           | 337,694     |             |        | $    | 251,300 |         |       | $ | 243,896 |        
|Numerator for cumulative effect of a change
in accounting principle per common share -
diluted                   |                                                                     |                                                                                      |        |                           |        |                             | (16,778,526 | )           |        |      |        |         |       |   |        |        
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|Numerator for net income (loss) per common
share  diluted                                                       |                                                                     |                                                                                      | 324,452 |                           |        |                             | (16,440,832 | )           |        |      | 251,300 |         |       |   | 243,896 |        
|Denominator:                                                                                                     |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|                                                                                                                 | Weighted average common shares                                      |                                                                                      |         | 613,961                   |        |                             |             | 600,916     |        |      |         | 614,361 |       |   |         | 602,618 |      
|                                                                                                                 | Effect of dilutive securities:                                      |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |         |      
|                                                                                                                 |                                                                     | Stock options and common stock warrants                                              |         |                           | 3,078  |                             |             |             | 5,005  |      |         |         | 3,195 |   |         |         | 4,795 | 
|                                                                                                                 |                                                                     | Convertible debt  2.625% issued in 1998                                             |         |                           | 4,154  |                             |             |             | 9,282  |      |         |         |      |   |         |         | 9,282 | 
|                                                                                                                 |                                                                     | Convertible debt  1.5% issued in 1999                                               |         |                           |       |                             |             |             | 9,454  |      |         |         |      |   |         |         | 9,454 | 
|                                                                                                                 |                                                                     | LYONS  1998 issue                                                                   |         |                           | 1,798  | *                           |             |             | 3,085  | *    |         |         | 563   | * |         |         | 3,085 | 
|                                                                                                                 |                                                                     | Less: Anti-dilutive items                                                            |         |                           | (1,798 | )                           |             |             | (3,085 | )    |         |         | (563  | ) |         |         |      | 
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|Denominator for net income (loss) per common
share  diluted                                                     |                                                                     |                                                                                      | 621,193 |                           |        |                             | 624,657     |             |        |      | 617,556 |         |       |   | 629,234 |        
|Net income (loss) per common share:                                                                              |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|                                                                                                                 |                                                                     | Income (loss) before cumulative effect
of a change in accounting principle -
Basic   |         | $                         | .53    |                             |             | $           | .55    |      |         | $       | .41   |   |         | $       | .40   | 
|                                                                                                                 |                                                                     | Cumulative effect of a change in
accounting principle  Basic                        |         |                           |       |                             |             |             | (27.92 | )    |         |         |      |   |         |         |      | 
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|                                                                                                                 |                                                                     | Net income (loss)  Basic                                                            |         | $                         | .53    |                             |             | $           | (27.37 | )    |         | $       | .41   |   |         | $       | .40   | 
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|                                                                                                                 |                                                                     | Income (loss) before cumulative effect
of a change in accounting principle -
Diluted |         | $                         | .52    |                             |             | $           | .54    |      |         | $       | .41   |   |         | $       | .39   | 
|                                                                                                                 |                                                                     | Cumulative effect of a change in
accounting principle  Diluted                      |         |                           |       |                             |             |             | (26.86 | )    |         |         |      |   |         |         |      | 
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        
|                                                                                                                 |                                                                     | Net income (loss)  Diluted                                                          |         | $                         | .52    |                             |             | $           | (26.32 | )    |         | $       | .41   |   |         | $       | .39   | 
|                                                                                                                 |                                                                     |                                                                                      |         |                           |        |                             |             |             |        |      |         |         |       |   |         |        



|* |  | Denotes items that are anti-dilutive to the calculation of earnings per
share.
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