Statements of Income and Expenses - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income
Interest Income	$ 23,587	$ 373,021	$ 2,646,417
Dividends from Affiliates	19,848	288,312	195,656
Total Income	43,435	661,333	2,842,073
Expenses
Management Fee	900,987	1,136,286	972,016
Brokerage Commissions and Fees	7,578	9,043	8,126
Interest Expense	2,215	5,552	8,138
Total Expenses	910,780	1,150,881	988,280
Less: Waivers	(25,073)	(123,394)	(19,960)
Net Expenses	885,707	1,027,487	968,320
Net Investment Income (Loss)	(842,272)	(366,154)	1,873,753
Net Realized Gain (Loss) on
United States Treasury Obligations	292	738	(320)
Affiliated Investments	(17,893)
Capital gain distributions from Affiliated Investments	1,939	7,156
Commodity Futures Contracts	21,636,431	19,246,763	4,661,855
Net Realized Gain (Loss)	21,620,769	19,254,657	4,661,535
Net Change in Unrealized Gain (Loss) on
United States Treasury Obligations	(3,869)	(14,796)	6,114
Affiliated Investments	12,478	(50,925)
Commodity Futures Contracts	(30,488,462)	13,733,735	11,056,841
Net Change in Unrealized Gain (Loss)	(30,479,853)	13,668,014	11,062,955
Net Realized and Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Commodity Futures Contracts	(8,859,084)	32,922,671	15,724,490
Net Income (Loss)	$ (9,701,356)	$ 32,556,517	$ 17,598,243