EXHIBIT 12.1

	Three Months Ended June 30, 2016			Fiscal Year Ended March 31,
				2016			2015			2014			2013			2012
Earnings:(1)
Earnings before income taxes		67,276			219,252			252,927			181,804			84,096			21,912
Add: Fixed charges		4,390			18,539			16,631			18,171			15,791			17,769
Add: Amortization of capitalized interest and FIN 48 Interest		134			536			(3,311	)		1,177			945			(367	)
Add: Cash distributions from equity method investments		8,750			37,250			40,375			37,750			28,500			23,250
Subtract: Income from equity method investments		(7,980	)		(39,083	)		(44,967	)		(37,811	)		(32,507	)		(28,528	)
Total Earnings		72,570			236,494			261,655			201,091			96,825			34,036
Fixed Charges:(2)
Interest expense		3,901			16,583			15,590			17,646			15,467			17,530
Interest component of rent expense		489			1,956			1,041			525			324			239
Total Fixed Charges		4,390			18,539			16,631			18,171			15,791			17,769
Ratio of Earnings to Fixed Charges		16.5x			12.8x			15.7x			11.1x			6.1x			1.9x

(1) Earnings represent earnings before income taxes and before income from equity method investments plus: (a) fixed charges; and (b) cash distributions from equity method investments.

(2) Fixed charges include: (a) interest expense, whether expensed or capitalized, less interest accrued for uncertain tax positions; and (b) the portion of operating rental expense which management believes is representative of the interest component of rent expense.