Statements of Cash Flows - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities:
Net income (loss)	$ (814,326)	$ 567,143	$ (3,146,483)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Unrealized (gain) loss on open futures contracts	389,575	(522,819)	3,364,926
(Increase) decrease in receivable from General Partner	(14,346)	1,757	40,379
(Increase) decrease in dividends receivable	1,921	(260)	(831)
(Increase) decrease in interest receivable	42	(201)	(88)
(Increase) decrease in prepaid insurance	(120)	253	(107)
(Increase) decrease in ETF transaction fees receivable	0	0	350
(Increase) decrease in other assets	216	(216)	0
Increase (decrease) in payable due to Broker	(81,581)	81,581	(2,099,689)
Increase (decrease) in General Partner management fees payable	(950)	(1,784)	(4,944)
Increase (decrease) in professional fees payable	5,541	(21,209)	(29,606)
Increase (decrease) in brokerage commissions payable	0	(610)	(620)
Increase (decrease) in directors' fees payable	(22)	(62)	(65)
Increase (decrease) in insurance payable	(516)	516
Increase (decrease) in license fees payable		(331)	(413)
Net cash provided by (used in) operating activities	(514,566)	103,758	(1,877,191)
Cash Flows from Financing Activities:
Addition of partnership shares		584,722	1,021,619
Redemption of partnership shares	(1,454,651)	(3,843,434)	(5,986,374)
Net cash provided by (used in) financing activities	(1,454,651)	(3,258,712)	(4,964,755)
Net Increase (Decrease) in Cash and Cash Equivalents	(1,969,217)	(3,154,954)	(6,841,946)
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of year	5,763,922	8,918,876	15,760,822
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of year	$ 3,794,705	$ 5,763,922	$ 8,918,876

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