Exhibit 12

Ratio of Earnings to Fixed Charges

(in thousands, except ratios)

	December 31,
	2001		2002	2003	2004	2005
Income before income tax expense	$	954	11,923	79,772	99,761	106,024
Equity in losses of equity-method investees	—		347	618	615	42
Net income before equity in losses of equity- method investees	954		12,270	80,390	100,376	106,066
Add fixed charges:
Interest expense including amortization of debt issuance costs	50,363		44,842	26,397	30,952	26,548
Estimate of interest within rental expense	3,647		3,723	4,071	5,116	4,208
	54,010		48,565	30,468	36,068	30,756
Adjusted earnings	54,964		60,835	110,858	136,444	136,822
Ratio of earnings to fixed charges (1)	1.0		1.3	3.6	3.8	4.4

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