Condensed Statements of Cash Flows (Unaudited) - USD ($)		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities:
Net income (loss)		$ 43,581,159	$ 27,674,901
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Change in unrealized (gain) loss on open commodity futures contracts		(680,157)	(836,082)
(Increase) decrease in receivable from General Partner		195,888	(77,554)
(Increase) decrease in dividends receivable		(825)	6,793
(Increase) decrease in interest receivable		552	144
(Increase) decrease in prepaid insurance	[1]	(9,205)	(737)
(Increase) decrease in ETF transaction fees receivable		350	0
Increase (decrease) in payable due to Broker			(524,417)
Increase (decrease) in General Partner management fees payable		(2,177)	28,272
Increase (decrease) in professional fees payable		(16,446)	(51,574)
Increase (decrease) in brokerage commissions payable		4,236	7,140
Increase (decrease) in directors' fees payable	[1]	467	201
Increase (decrease) in license fees payable		511	3,509
Net cash provided by (used in) operating activities		43,074,353	26,230,596
Cash Flows from Financing Activities:
Addition of partnership shares		36,904,500	93,608,020
Redemption of partnership shares		(86,868,840)	(68,222,468)
Net cash provided by (used in) financing activities		(49,964,340)	25,385,552
Net Increase (Decrease) in Cash and Cash Equivalents		(6,889,987)	51,616,148
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period		79,722,412	29,675,052
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period		$ 72,832,425	$ 81,291,200

[1] Certain prior year amounts have been reclassified for consistency with the current presentation.