Exhibit 12.1

Computation of Ratio of Earnings to

Fixed Charges and Preferred Stock

Dividends (dollars in thousands)

	Nine Months Ended September 30, 2011			Year Ended December 31,
				2010			2009			2008			2007			2006
Earnings before fixed charges:
Add: pre-tax income from continuing operations before adjustment for income or loss from equity investees and noncontrolling interests in consolidated subsidiaries		32,939		$	16,850			(7,741	)		117,403			165,151			158,019
Add: fixed charges		114,952			163,659			176,950			195,703			181,780			157,277
Add: distributed income of equity investees		34,557			131,146			54,800			59,653			71,919			42,240
Subtract: capitalized interest		(1,293	)		(5,099	)		(19,062	)		(36,511	)		(35,424	)		(23,952	)
Subtract: preferred stock dividends		(17,550	)		(23,400	)		(23,400	)		(23,400	)		(23,400	)		(23,400	)
Subtract: noncontrolling interest in pre-tax income of subsidiaries that have not incurred fixed charges		(43	)		(66	)		(59	)		(41	)		(869	)		(4,752	)
Earnings		163,562		$	283,090			181,489			312,808			359,157			305,432
Fixed charges:
Interest expensed and capitalized		93,286		$	134,936			147,613			167,520			154,411			130,009
Amortized premiums, discounts and capitalized expenses related to indebtedness		2,105			2,957			3,517			2,981			1,987			2,833
Estimate of the interest within rental expense		2,010			2,366			2,420			1,802			1,982			1,035
Preferred stock dividends		17,550			23,400			23,400			23,400			23,400			23,400
Total fixed charges		114,952		$	163,659			176,950			195,703			181,780			157,277
Ratio of earnings to fixed charges		1.4			1.7			1.0			1.6			2.0			2.0