Exhibit 12

Statement re: Computation of Ratios

(In thousands)

	Nine months ended September 30, 2008		2007		2006		2005		2004		2003
Pre-tax income from continuing operations before adjustment for equity earnings and minority interest	$	75,657	$	90,795	$	292,586	$	56,450	$	36,849	$	26,727
Distribution of earnings from equity investees		—		—		378		677		5,757		132
Adjusted pre-tax income from continuing operations before adjustment for equity earnings and minority interest	$	75,657	$	90,795	$	292,964	$	57,127	$	42,606	$	26,859
Fixed charges
Interest expense on all debt and amortization of debt issue costs from continuing operations	$	12,203	$	14,735	$	16,007	$	13,335	$	9,266	$	6,413
Interest expense on all debt and amortization of debt issue costs from discontinued operations		—		2,462		1,469		1,565		1,876		2,233
Portion of rental expense on operating leases attributable to interest		3,076		6,944		6,816		5,344		3,587		3,358
Total fixed charges		15,279		24,141		24,292		20,244		14,729		12,004
Plus: preferred stock dividends		—		—		—		—		782		2,148
Total fixed charges plus preferred stock dividends	$	15,279	$	24,141	$	24,292	$	20,244	$	15,511	$	14,152
Total earnings plus fixed charges	$	90,936	$	114,936	$	317,256	$	77,371	$	57,335	$	38,863
Ratio of earnings to fixed charges		6.0		4.8		13.1		3.8		3.9		3.2
Ratio of earnings to fixed charges and preferred stock dividends		6.0		4.8		13.1		3.8		3.7		2.7