Exhibit 12.1

	For the Year Ended May 31,										Six Months Ended November 30,
	2013		2012		2011		2010		2009		2013		2012
											(unaudited)
	(In Thousands Except Per Share Data and Ratios)
Earnings Available for Fixed Charges
Earnings before income taxes	$	80,311	$	93,203	$	103,407	$	65,614	$	86,249	$	57,836	$	54,395
Add:
Interest expense	39,448		36,247		28,143		25,532		30,225		20,538		20,355
Amortization of debt expense	2,154		1,831		2,524		1,301		1,191		976		1,074
One-third of rent expense under operating leases (estimated by management to be the interest factor of such rent expense)	11,760		10,109		9,284		7,744		7,548		5,914		6,053
Earnings available for fixed charges	$	133,673	$	141,390	$	143,358	$	100,191	$	125,213	$	85,264	$	81,877
Fixed Charges
Interest expense	39,448		36,247		28,143		25,532		$	30,225	$	20,538	$	20,355
Amortization of debt expense	2,154		1,831		2,524		1,301		1,191		976		1,074
One-third of rent expense under operating leases (estimated by management to be the interest factor of such rent expense)	11,760		10,109		9,284		7,744		7,548		5,914		6,053
Total fixed charges	$	53,362	$	48,187	$	39,951	$	34,577	$	38,964	$	27,428	$	27,482
Ratio of earnings to fixed charges	2.5		2.9		3.6		2.9		3.2		3.1		3.0