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Exhibit 12.1

Computation of Ratios of Earnings to Fixed Charges
(Amounts in thousands)

	Year ended December 31, 2010		Year ended December 31, 2009		Year ended December 31, 2008			Year ended December 31, 2007		Year ended December 31, 2006
Earnings (loss):
Income (loss) before equity in income of unconsolidated affiliate and income tax expense	$	371,766	$	77,220	$	(1,077,601	)	$	205,000	$	120,868
Add: Fixed charges from below		156,852		289,374		564,614			617,504		430,384
Total earnings (loss) before equity in income of unconsolidated affiliate, income tax expense and fixed charges	$	528,618	$	366,594	$	(512,987	)	$	822,504	$	551,252
Fixed charges:
Interest expense	$	156,852	$	289,374	$	564,614		$	617,504	$	430,384
Total fixed charges	$	156,852	$	289,374	$	564,614		$	617,504	$	430,384
Ratio of earnings to fixed charges		3.4x		1.3x			*		1.3x		1.3x

*

Losses exceeded fixed charges by approximately $513.0 million for the year ended December 31, 2008. The coverage deficiency for total fixed charges for the year ended December 31, 2008 was $1,077.6 million to arrive at a one-to-one ratio.

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Exhibit 12.1

Computation of Ratios of Earnings to Fixed Charges (Amounts in thousands)