EXHIBIT 12.1

RATIO OF EARNINGS TO FIXED CHARGES

     We have computed the ratio of earnings to fixed charges for each of the following periods on a consolidated basis. For purposes of computing the ratio of earnings to fixed charges, “earnings” consist of pretax income (loss) before adjustment for minority interests in consolidated subsidiaries or income or loss from equity investees, plus fixed charges (excluding capitalized interest), plus distributed income of equity investees. “Fixed charges” represent interest incurred (whether expensed or capitalized), amortization of debt expense and an estimate of the interest within rental expense. You should read the ratio of earnings to fixed charges in conjunction with our consolidated and condensed financial statements that are incorporated by reference in this prospectus.

	Year ended December 31,
	2008			2007			2006			2005			2004
	(Dollars in thousands)
EARNINGS:
Income (loss) before income taxes	$	(494,998	)	$	524,694		$	605,275		$	227,587		$	125,693
Less capitalized interest		(42,125	)		(31,790	)		(10,609	)		(2,025	)		(243	)
Deduct (income) loss of equity investees		(31,971	)		(19,698	)		(18,130	)		(13,459	)		(7,927	)
Add distributed income of equity investees		36,914			31,121			16,250			10,608			7,500
Add fixed charges		141,553			114,895			55,291			18,150			8,450
	$	(390,627	)	$	619,222		$	648,077		$	240,861		$	133,473
FIXED CHARGES:
Interest expense, net of capitalized amounts	$	87,045		$	68,607		$	41,304		$	12,945		$	6,039
Capitalized interest		42,125			31,790			10,609			2,025			243
Interest portion of rent expense		12,383			14,498			3,378			3,180			2,168
Total fixed charges	$	141,553		$	114,895		$	55,291		$	18,150		$	8,450
RATIO OF EARNINGS TO FIXED CHARGES		–	(a)		5.4			11.7			13.3			15.8

(a) For the year ended December 31, 2008, earnings were insufficient to cover fixed charges by $532.2 million.

- 9 -