Exhibit 12.1

											Three Months Ended
	For the Year Ended May 31,										August 31,
	2013		2012		2011		2010		2009		2013		2012
	(In Thousands Except Per Share Data and Ratios)										(unaudited)
Earnings Available for Fixed Charges
Earnings before income taxes	$	80,311	$	93,203	$	103,407	$	65,614	$	86,249	$	28,130	$	28,521
Add:
Interest expense	39,448		36,247		28,143		25,532		30,225		10,532		10,061
Amortization of debt expense	2,154		1,831		2,524		1,301		1,191		489		540
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		3,052		3,038
Earnings available for fixed charges	$	133,673	$	141,390	$	143,358	$	100,191	$	125,213	$	42,203	$	42,160
Fixed Charges
Interest expense	39,448		36,247		28,143		25,532		$	30,225	$	10,532	$	10,061
Amortization of debt expense	2,154		1,831		2,524		1,301		1,191		489		540
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		3,052		3,038
Total fixed charges	$	53,362	$	48,187	$	39,951	$	34,577	$	38,964	$	14,073	$	13,639
Ratio of earnings to fixed charges	2.5		2.9		3.6		2.9		3.2		3.0		3.1