EXHIBIT 12.1

STATEMENT OF COMPUTATION OF RATIO OF EARNINGS

 TO FIXED CHARGES

(In thousands)

			2017	2016	2015	2014	2013
Earnings:
	Income (loss) before income tax provision		$     508,510	$       361,365	$    (126,286)	$     385,662	$     320,921
	Plus:  fixed charges per below		132,502	97,645	69,775	70,194	80,197
	Less: capitalized interest per below			-	-	-	-
	Plus:  current period amortization of interest
		capitalized in prior periods	49	49	49	49	49
	Total earnings		$     641,061	$       459,059	$     (56,462)	$     455,905	$     401,167
Fixed charges:
	Interest expense		$     125,297	$        92,709	$       64,236	$       64,674	$       73,579
	Capitalized interest			-	-	-	-
	Interest portion of rent expense		7,205	4,937	5,540	5,520	6,618
	Total fixed charges		$     132,502	$        97,645	$       69,776	$       70,194	$       80,197
Ratio of earnings to fixed charges			4.8	4.7	(0.8)	6.5	5.0
Insufficient coverage			$             -	$               -	$     126,237	$             -	$             -