Exhibit 12.1

RATIO OF EARNINGS TO FIXED CHARGES

The following table sets forth information regarding our ratio of earnings to fixed charges for each of the periods shown. For purposes of calculating this ratio, (i) earnings consist of income (loss) from continuing operations before provision (benefit) for income taxes and fixed charges and (ii) fixed charges consist of interest expense, which includes amortization of deferred financing charges, and imputed interest on our lease obligations. The interest component of rent was determined based on an estimate of a reasonable interest factor at the inception of the leases.

	2010			2011		2012		2013		2014		Nine Months Ended September 30, 2014		Nine Months Ended September 30, 2015
Calculation of income/(loss) from continuing before income taxes and fixed charges
Net income/(loss) from continuing operations	$	(9,914	)	$	20,887	$	205,287	$	217,054	$	221,024	$	201,603	$	(35,931	)
Income tax expense (benefit)		—			—		71,296		129,200		64,860		52,242		(30,649	)
Loss from equity method investments		—			107		14,571		—		—		—		—
Fixed Charges		119,288			109,039		202,470		547,781		523,649		417,770		444,448
Earnings as adjusted	$	109,374		$	130,033	$	493,624	$	894,035	$	809,533	$	671,615	$	377,868
Calculation of fixed charges
Interest expense	$	116,163		$	105,375	$	197,308	$	538,805	$	516,387		412,695		439,309
Interest on lease obligations		3,125			3,664		5,162		9,148		7,262		5,075		5,139
Total fixed charges	$	119,288		$	109,039	$	202,470	$	547,953	$	523,649	$	417,770	$	444,448
Calculation of Earnings to Fixed Charges		0.92			1.19		2.44		1.63		1.55		1.61		0.85
Coverage deficiencies		9,914			—		—		—		—		—		66,580

(1) Earnings for the nine months ended September 30, 2015 were inadequate to cover fixed charges. The coverage deficiency was $66.6 million. Earnings for the year ended December 31, 2010 were inadequate to cover fixed charges. The coverage deficiency was $9.9 million.