Exhibit 12
Computation of Ratio of Earnings to Fixed Charges | ||||||||||||||||||||
Year Ended May 31, | ||||||||||||||||||||
2009 | 2008 | 2007 | 2006 | 2005 | ||||||||||||||||
Net income before income taxes | $ | 361,593 | $ | 530,704 | $ | 533,553 | $ | 518,019 | $ | 469,022 | ||||||||||
Capitalized interest | 2,259 | 1,090 | 1,069 | 384 | 749 | |||||||||||||||
Fixed charges | 65,001 | 1,090 | 62,482 | 42,211 | 33,623 | |||||||||||||||
Earnings | $ | 428,853 | $ | 532,884 | $ | 597,104 | $ | 560,614 | $ | 503,394 | ||||||||||
Year Ended May 31, | ||||||||||||||||||||
2009 | 2008 | 2007 | 2006 | 2005 | ||||||||||||||||
Fixed charges: | ||||||||||||||||||||
Interest component of rent expense | $ | 12,506 | $ | 11,549 | $ | 11,089 | $ | 10,045 | $ | 8,426 | ||||||||||
Interest expense | 50,236 | 52,823 | 50,324 | 31,782 | 24,448 | |||||||||||||||
Capitalized interest | 2,259 | 1,090 | 1,069 | 384 | 749 | |||||||||||||||
$ | 65,001 | $ | 65,462 | $ | 62,482 | $ | 42,211 | $ | 33,623 | |||||||||||
Ratio of earnings to fixed charges | 6.6 | 8.1 | 9.6 | 13.3 | 15.0 |