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|                                                                                         |   | 2008   |   |   | 2007   |   |   | 2006   |   |   | 2005   |   |   | 2004   |   |
|----------------------------------------------------------------------------------------------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|
|                                                                                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Profit                                                                                       |   | $      | 385    |   |   | $      | 494    |   |   | $      | 473    |   |   | $      | 364    |   |   | $ | 287 |   |
|                                                                                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Add:                                                                                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   Provision      for income taxes                                                  |   |   | 120    |   |   |   | 234    |   |   |   | 215    |   |   |   | 173    |   |   |   | 137 |   |
|                                                                                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Deduct:                                                                                      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   Partnership      income                                                          |   |   | (3     | )      |   |   | (7     | )      |   |   | (4     | )      |   |   | (6     | ) |   |   | (3 | ) |
|                                                                                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Profit      before income taxes and partnership income                                       |   | $      | 502    |   |   | $      | 721    |   |   | $      | 684    |   |   | $      | 531    |   |   | $ | 421 |   |
|                                                                                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fixed      charges:                                                                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   Interest      expense                                                            |   | $      | 1,159  |   |   | $      | 1,132  |   |   | $      | 1,029  |   |   | $      | 783    |   |   | $ | 532 |   |
|   Rentals      at computed interest*                                               |   |   | 6      |   |   |   | 5      |   |   |   | 6      |   |   |   | 5      |   |   |   | 5 |   |
|                                                                                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total      fixed charges                                                                     |   | $      | 1,165  |   |   | $      | 1,137  |   |   | $      | 1,035  |   |   | $      | 788    |   |   | $ | 537 |   |
|                                                                                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Profit      before income taxes plus fixed charges                                           |   | $      | 1,667  |   |   | $      | 1,858  |   |   | $      | 1,719  |   |   | $      | 1,319  |   |   | $ | 958 |   |
|                                                                                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ratio      of profit before income taxes plus  fixed      charges to fixed charges |   |   | 1.43   |   |   |   | 1.63   |   |   |   | 1.66   |   |   |   | 1.67   |   |   |   | 1.78 |   |

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