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Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities:
Net income (loss)	$ (5,508,027)	$ 1,721,955	$ 29,373,365
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Unrealized (gain) loss on open futures contracts	26,844,760	6,205,208	(37,249,404)
(Increase) decrease in dividends receivable	15,874	(5,975)	(10,590)
(Increase) decrease in interest receivable	1,530	(2,694)	0
Increase (decrease) in payable due to Broker	(7,565,281)	(7,547,510)	15,112,791
Increase (decrease) in General Partner management fees payable	(18,959)	(17,694)	30,247
Increase (decrease) in professional fees payable	(17,856)	64,802	(73,070)
Increase (decrease) in brokerage commissions payable	(3,940)	0	2,200
Increase (decrease) in directors' fees and insurance payable	(643)	(425)	697
Increase (decrease) in license fees payable	(1,572)	(2,320)	2,276
Net cash provided by (used in) operating activities	13,745,886	415,347	7,188,512
Cash Flows from Financing Activities:
Addition of partnership shares	0	22,440,164	56,075,976
Redemption of partnership shares	(35,247,245)	(58,996,025)	(29,595,130)
Net cash provided by (used in) financing activities	(35,247,245)	(36,555,861)	26,480,846
Net Increase (Decrease) in Cash and Cash Equivalents	(21,501,359)	(36,140,514)	33,669,358
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of year	88,230,084	124,370,598	90,701,240
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of year	$ 66,728,725	$ 88,230,084	$ 124,370,598

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