EXHIBIT 12

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Years Ended December 31,
(In thousands)	2007			2006			2005			2004			2003
Earnings before income taxes	$	263,891		$	233,442		$	175,860		$	127,830		$	47,745
Add:
Interest on indebtedness		33,311			29,227			36,234			34,227			39,324
Amortization of debt expense		796			704			939			1,098			1,741
Portion of rents representative of the interest factor		8,578			7,735			7,392			7,089			7,807
Deduct:
Undistributed earnings from less-than-50-percent-owned entities		427			(61	)		(631	)		(1,055	)		(1,777	)
Earnings (as defined)	$	307,003		$	271,047		$	219,794		$	169,189		$	94,840
Fixed charges:
Interest on indebtedness		33,311			29,227			36,234			34,227			39,324
Amortization of debt expense		796			704			939			1,098			1,741
Portion of rents representative of the interest factor		8,578			7,735			7,392			7,089			7,807
Total fixed charges	$	42,685		$	37,666		$	44,565		$	42,414		$	48,872
Ratio of earnings to fixed charges		7.2	x		7.2	x		4.9	x		4.0	x		1.9	x