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Exhibit 12.1

Ratio of Earnings to Fixed Charges

		Years Ended December 31
		1997		1998		1999		2000		2001
		(in thousands)
Pretax earnings from continuing operations		5,464		7,935		7,654		27,687		61,365
Fixed charges
	Interest expense	829		1,959		2,090		3,570		8,610
	Capitalized interest	40		448		351		626		1,172
Total fixed charges		869		2,407		2,441		4,196		9,782
Less capitalized interest		(40	)	(448	)	(351	)	(626	)	(1,172	)
		829		1,959		2,090		3,570		8,610
Adjusted earnings		6,293		9,894		9,744		31,257		69,975
Ratio of earnings to fixed charges		7.24		4.11		3.99		7.45		7.15

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Ratio of Earnings to Fixed Charges