Exhibit 12
Ratio of Earnings to Fixed
Charges
Charges
| 2006 | 2005 | 2004 | 2003 | 2002 | ||||||||||||||||
| Net income | $ | 521,815 | $ | 476,993 | $ | 432,080 | $ | 395,759 | $ | 371,585 | ||||||||||
| Capitalized Interest | 384 | 749 | 532 | 186 | 640 | |||||||||||||||
| Fixed Charges | 42,211 | 33,623 | 33,179 | 39,464 | 17,318 | |||||||||||||||
| Earnings | $ | 564,410 | $ | 511,365 | $ | 465,791 | $ | 435,409 | $ | 389,543 | ||||||||||
| Fixed Charges: | ||||||||||||||||||||
| Interest Component of Rent Expense | 10,045 | 8,426 | 7,546 | 8,361 | 5,726 | |||||||||||||||
| Interest Expense | 31,782 | 24,448 | 25,101 | 30,917 | 10,952 | |||||||||||||||
| Capitalized Interest | 384 | 749 | 532 | 186 | 640 | |||||||||||||||
| $ | 42,211 | $ | 33,623 | $ | 33,179 | $ | 39,464 | $ | 17,318 | |||||||||||
| Ratio of Earnings to Fixed Charges | 13.4 | 15.2 | 14.0 | 11.0 | 22.5 | |||||||||||||||