Exhibit 12.1

Statement Regarding Computation of Ratio of Earnings to Fixed Charges

Ratio of Earnings to Fixed Charges (dollar amounts in thousands):

	Six Months Ended June 30,		Year Ended December 31,
	2016		2015			2014			2013		2012		2011
Earnings:
Income (loss) from continuing operations before income taxes	$	37,071	$	(67,746	)	$	198,430		$	240,214	$	192,719	$	159,280
Add: Fixed charges		80,593		141,403			138,618			131,281		111,949		91,259
Less: Undistributed earnings (losses) from equity method investees		3,555		(7,978	)		(269	)		—		—		39
Total earnings	$	114,109	$	81,635		$	337,317		$	371,495	$	304,668	$	250,500
Fixed charges:
Interest expense	$	25,146	$	48,729		$	50,898		$	46,804	$	37,784	$	35,006
Estimate of interest expense within rental expense		55,447		92,674			87,720			84,477		74,165		56,253
Total fixed charges	$	80,593	$	141,403		$	138,618		$	131,281	$	111,949	$	91,259
Ratio of earnings to fixed charges		1.4		0.6			2.4			2.8		2.7		2.7