Exhibit 12.1

Ratio of Earnings to Fixed Charges

	September 30,
	2009		2008		2007		2006		2005		2004
Ratio of earnings to fixed charges
Ratio		2.36		2.06		2.34		1.60		1.52		1.59
Income from continuing operations	$	95,594	$	106,928	$	130,966	$	51,685	$	32,380	$	32,148
Interest		70,540		101,045		97,639		85,541		62,625		53,270
“Earnings”	$	166,134	$	207,973	$	228,605	$	137,226	$	95,005	$	85,418
Interest	$	70,540	$	101,045	$	97,639	$	85,541	$	62,625	$	53,270
Capitalized interest		—		—		—		—		—		365
“Fixed charges”	$	70,540	$	101,045	$	97,639	$	85,541	$	62,625	$	53,635
Ratio of earnings to combined fixed charges and preferred stock dividends
Ratio		2.22		1.91		2.06		1.36		1.21		1.31
Income from continuing operations	$	95,594	$	106,928	$	130,966	$	51,685	$	32,380	$	32,148
Interest		70,540		101,045		97,639		85,541		62,625		53,270
“Earnings”	$	166,134	$	207,973	$	228,605	$	137,226	$	95,005	$	85,418
Interest	$	70,540	$	101,045	$	97,639	$	85,541	$	62,625	$	53,270
Capitalized interest		—		—		—		—		—		365
Preferred dividends		4,355		7,637		13,434		15,163		15,622		11,802
“Combined fixed charges and preferred stock dividends”	$	74,895	$	108,682	$	111,073	$	100,704	$	78,247	$	65,437