Statements of Income and Expenses (Unaudited) - USD ($)		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Income
Interest Income		$ 84,035	$ 8,243
Expenses
Management Fee		299,426	295,721
Brokerage Commissions and Fees		5,125	8,645
Interest Expense	[1]	559
Total Expenses		305,110	304,366
Net Investment Income (Loss)		(221,075)	(296,123)
Net Realized Gain (Loss) on
United States Treasury Obligations			1,424
Commodity Futures Contracts		(226,541)	(11,690,959)
Net Realized Gain (Loss)		(226,541)	(11,689,535)
Net Change in Unrealized Gain (Loss) on
United States Treasury Obligations		31,346	(2,025)
Commodity Futures Contracts		21,297,986	7,982,368
Net Change in Unrealized Gain (Loss)		21,329,332	7,980,343
Net Realized and Net Change in Unrealized Gain (Loss) on United States Treasury Obligations and Commodity Futures Contracts		21,102,791	(3,709,192)
Net Income (Loss)		$ 20,881,716	$ (4,005,315)

[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.