Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Nine
	Months Ended
	September 30,		Year Ended December 31,
	2011		2010		2009		2008		2007		2006
	(Dollars in thousands, except ratios)
Income before income taxes and cumulative effect of change in accounting principle, but after noncontrolling interests		368,264		603,305		382,207		326,060		1,089,309		985,916
Add:
Portion of rents representative of the interest factor		7,484		9,979		9,356		7,934		7,146		6,449
Interest expense		84,317		106,969		87,989		84,623		88,996		92,522
Income as adjusted		460,065		720,253		479,552		418,617		1,185,451		1,084,887
Fixed charges:
Interest expense		84,317		106,969		87,989		84,623		88,996		92,522
Portion of rents representative of the interest factor		7,484		9,979		9,356		7,934		7,146		6,449
Total		91,801		116,948		97,345		92,557		96,142		98,971
Ratio of Earnings to Fixed Charges		5.0		6.2		4.9		4.5		12.3		11.0