EXHIBIT 12

	Year Ended December 31,
	2000			2001			2002			2003			2004			2005
Earnings:
Earnings before income taxes and the cumulative effect of accounting changes	$	266,834		$	21,763		$	213,454		$	209,460		$	215,801		$	206,960
Add: Total fixed charges		138,017			116,157			108,451			98,117			94,177			95,159
Less: Interest capitalized		2,398			489			573			500			163			167
Adjusted earnings	$	402,453		$	137,431		$	321,332		$	307,077		$	309,815		$	301,952
Fixed Charges:
Interest	$	135,151		$	113,145		$	105,359		$	94,110		$	90,327		$	91,171
Portion of rental expense representative of the interest factor(1)		2,866			3,012			3,092			4,007			3,850			3,988
Total fixed charges	$	138,017		$	116,157		$	108,451		$	98,117		$	94,177		$	95,159
Ratio of Earnings to Fixed Charges		2.92	x		1.18	x		2.96	x		3.13	x		3.29	x		3.17

(1) For purposes of calculating fixed charges, an interest factor of one third was applied to total rent expense for the period indicated.