Exhibit 12

STATEMENT REGARDING COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES

	For the year ended December 31,
(dollars in thousands)	2006		2005		2004		2003		2002
Income before net gain or loss on real estate disposals, discontinued operations, provision for income taxes and extraordinary loss	$	131,430	$	125,422	$	100,220	$	96,135	$	34,685
Interest Expense
Senior notes payable and other debt		141,094		105,581		66,105		61,660		72,384
United States Settlement		—		—		—		4,943		5,461
Earnings	$	272,524	$	231,003	$	166,325	$	162,738	$	112,530
Interest Expense
Senior notes payable and other debt	$	141,094	$	105,581	$	66,105	$	61,660	$	72,384
United States Settlement		—		—		—		4,943		5,461
Fixed Charges	$	141,094	$	105,581	$	66,105	$	66,603	$	77,845
Ratio of Earnings to Fixed Charges		1.93		2.19		2.52		2.44		1.45