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Condensed Statements of Cash Flows - USD ($)		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Cash Flows from Operating Activities:
Net income (loss)		$ (2,460,546,099)	$ 312,085,655
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		(59,173,693)	(127,712,218)
(Increase) decrease in dividends receivable		(22,782)	83,797
(Increase) decrease in interest receivable		(117,062)	(3,251)
(Increase) decrease in prepaid insurance	[1]	(38,498)	(79,410)
(Increase) decrease in prepaid registration fees		(2,148,443)	429,819
(Increase) decrease in ETF transaction fees receivable		(351)	0
Increase (decrease) in payable due to Broker		(8,820,649)	0
Increase (decrease) in General Partner management fees payable		1,067,587	(73,267)
Increase (decrease) in professional fees payable		(179,069)	(601,991)
Increase (decrease) in brokerage commissions payable		207,158	0
Increase (decrease) in directors' fees payable	[1]	14,179	31,811
Increase (decrease) in license fees payable		152,917	(10,374)
Net cash provided by (used in) operating activities		(2,529,604,805)	184,150,571
Cash Flows from Financing Activities:
Addition of partnership shares		7,985,349,311	2,687,773,054
Redemption of partnership shares		(2,644,920,161)	(3,033,822,388)
Net cash provided by (used in) financing activities		5,340,429,150	(346,049,334)
Net Increase (Decrease) in Cash and Cash Equivalents		2,810,824,345	(161,898,763)
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of year		1,176,245,411	1,656,935,976
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of year		$ 3,987,069,756	$ 1,495,037,213
[1] Certain prior year amounts have been reclassified for consistency with the current presentation.

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