Exhibit 12

Ratio of Earnings to Fixed Charges

(in thousands, except ratios)

	December 31,
	2002		2003	2004	2005	2006
Income before income tax expense	$	11,923	79,772	99.671	106,024	85,405
Equity in losses of equity-method investees	347		618	615	42	(1,721	)
Net income before equity in losses of equity-method investees	12,270		80,390	300,376	106,066	83,684
Add fixed charges:
Interest expense including amortization of debt issuance costs	44,842		26,397	30,952	26,548	43,393
Estimate of interest within rental expense	3,723		4,071	5,116	4,208	4,755
	48,565		30,468	36,068	30,756	48,148
Adjusted earnings	60,835		110,858	136,444	136,822	131,832
Ratio of earnings to fixed charges (1)	1.3		3.6	3.8	4.4	2.7

(1) The ratio of earnings to fixed charges is computed by dividing adjusted earnings by fixed charges.