Exhibit 12

Computation of Ratio of Earnings to Fixed Charges

(In thousands)

	Twelve Months Ended December 31,
	2005			2004		2003			2002			2001
												(Unaudited)
Earnings:
Income from continuing operations before income taxes	$	654,684		$	82,563	$	(33,507	)	$	(40,423	)	$	183,370
Fixed charges, as shown below		42,979			49,349		47,845			55,640			50,889
Equity in income of investees		(2,850	)		4,317		8,851			9,818			(11,249	)
Minority Interest—Gas		(9,484	)		—		—			—			—
Adjusted Earnings (Loss)	$	685,329		$	136,229	$	23,189		$	25,035		$	223,010
Fixed charges:
Interest on indebtedness, expensed or capitalized	$	31,903		$	40,180	$	41,212		$	51,495		$	46,293
Interest within rent expense		11,076			9,169		6,633			4,145			4,596
Total Fixed Charges	$	42,979		$	49,349	$	47,845		$	55,640		$	50,889
Ratio of Earnings to Fixed Charges		15.95			2.76		—			—			4.38

(1) The deficiency of earnings to cover fixed charges was $24,656 for the year period ended December 31, 2003.

(2) The deficiency of earnings to cover fixed charges was $30,605 for the year period ended December 31, 2002.