Statements of Income and Expenses (Unaudited) - USD ($)		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Income
Interest Income		$ 52,619	$ 8,980
Expenses
Management Fee		189,260	332,543
Brokerage Commissions and Fees		31,611	30,186
Interest Expense	[1]	39,417
Total Expenses		260,288	362,729
Net Investment Income (Loss)		(207,669)	(353,749)
Net Realized Gain (Loss) on
United States Treasury Obligations		(1,192)	185
Commodity Futures Contracts		(15,633,425)	(14,326,530)
Net Realized Gain (Loss)		(15,634,617)	(14,326,345)
Net Change in Unrealized Gain (Loss) on
United States Treasury Obligations		5,612	(1,226)
Commodity Futures Contracts		19,390,050	4,976,562
Net Change in Unrealized Gain (Loss)		19,395,662	4,975,336
Net Realized and Net Change in Unrealized Gain (Loss) on United States Treasury Obligations and Commodity Futures Contracts		3,761,045	(9,351,009)
Net Income (Loss)		$ 3,553,376	$ (9,704,758)

[1] Interest Expense for the period ended March 31, 2016 represents interest expense on overdraft balances. These amounts are included in Interest Income for the period ended March 31, 2015.