Statements of Income and Expenses (Unaudited) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income
Interest Income	[1]	$ (6,749)	$ 23,696	$ 2,231	$ 53,511
Expenses
Management Fee		416,853	561,302	749,396	1,061,811
Brokerage Commissions and Fees		36,246	12,453	66,432	27,473
Total Expenses		453,099	573,755	815,828	1,089,284
Net investment income (loss)		(459,848)	(550,059)	(813,597)	(1,035,773)
Net Realized Gain (Loss) on
United States Treasury Obligations		959	1,498	1,144	1,708
Commodity Futures Contracts		(2,095,499)	(2,041,000)	(16,422,029)	(14,709,256)
Net realized gain (loss)		(2,094,540)	(2,039,502)	(16,420,885)	(14,707,548)
Net Change in Unrealized Gain (Loss) on
United States Treasury Obligations		3,953	(4,120)	2,727	(2,520)
Commodity Futures Contracts		(14,673,468)	22,767,125	(9,696,906)	19,954,375
Net change in unrealized gain (loss)		(14,669,515)	22,763,005	(9,694,179)	19,951,855
Net realized and net change in unrealized gain (loss) on United States Treasury Obligations and Commodity Futures Contracts		(16,764,055)	20,723,503	(26,115,064)	5,244,307
Net Income (Loss)		$ (17,223,903)	$ 20,173,444	$ (26,928,661)	$ 4,208,534

[1] Interest Income for the periods presented includes interest expense on overdraft balances.