EXHIBIT 12.1

RATIO OF EARNINGS TO FIXED CHARGES

Our ratio of earnings to fixed charges is as follows:

	2009			2008			2007		2006		2005
Earnings:
Income from continuing operations before provision for income taxes	$	522,454		$	587,401		$	745,558	$	352,816	$	214,410
Equity in undistributed earnings (losses) of affiliates		(194	)		(1,831	)		377		3,382		253
Interest expense		38			7,380			22,520		24,629		31,820
Portion of rents representative of the interest factor		20,821			25,248			22,292		17,318		11,019
	$	543,119		$	618,198		$	790,747	$	398,145	$	257,502
Fixed charges:
Interest expense, including amount capitalized	$	15,496		$	15,279		$	28,478	$	27,689	$	33,721
Portion of rents representative of the interest factor		20,821			25,248			22,292		17,318		11,019
	$	36,317		$	40,527		$	50,770	$	45,007	$	44,740
Ratio of earnings to fixed charges		14.95x			15.25x			15.58x		8.85x		5.76x