Exhibit 12.1

RATIO OF EARNINGS TO FIXED CHARGES

(dollars in thousands)

	Three Months Ended
	March 31,						Year Ended December 31,
	Pro forma 2014			2014			Pro forma 2013			2013			2012			2011			2010			2009
Earnings:
Income from continuing operations before income taxes	$	26,714		$	29,008		$	108,762		$	120,192		$	122,237		$	107,087		$	79,171		$	60,245
Fixed charges		13,955			11,660			35,006			16,987			12,961			9,274			8,027			7,096
Amortization of capitalized interest		356			161			1,422			186			91			0			0			0
Less: Capitalized interest		(6,589	)		(6,589	)		(6,589	)		0			(493	)		0			0			0
Total earnings	$	34,436		$	34,240		$	138,601		$	137,365		$	134,796		$	116,361		$	87,198		$	67,341
Fixed charges:
Interest expense, excluding amortization of capitalized interest	$	3,375		$	1,275		$	13,500		$	3,306		$	1,397		$	135		$	391		$	765
Amortization of capitalized interest		356			161			1,422			186			91			0			0			0
Capitalized interest		6,589			6,589			6,589			0			493			0			0			0
Portion of rent expense representative of interest		3,635			3,635			13,495			13,495			10,980			9,139			7,636			6,331
Total fixed charges	$	13,955		$	11,660		$	35,006		$	16,987		$	12,961		$	9,274		$	8,027		$	7,096
Ratio of earnings to fixed charges (1)		2.5	x(2)		2.9	x		4.0	x(2)		8.1	x		10.4	x		12.5	x		10.9	x		9.5	x

(1) For purposes of computing these ratios, “earnings” represent income from continuing operations before income taxes plus fixed charges and amortization of capitalized interest, less capitalized interest. “Fixed charges” consist of interest expense, including capitalized interest, amortization of capitalized interest and one-third (the portion deemed representative of the interest factor) of rental expense on operating leases.

(2) Because the net proceeds of the offering of the old notes were used to repay indebtedness and because the interest on the old notes is higher than the interest on the repaid indebtedness, our ratio of earnings to fixed charges changed by 10% or more.