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Condensed Statements of Operations (Unaudited) - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Gain (loss) on trading of commodity futures contracts:    
Realized gain (loss) on closed commodity futures contracts $ 111,404,050 $ 90,150,900
Change in unrealized gain (loss) on open commodity futures contracts (20,849,530) (12,779,710)
Dividend income 29,303 8,953
Interest income* 13,414 21,403
ETF transaction fees 4,200 10,500
Total Income (Loss) 90,601,437 77,412,046
Expenses    
General Partner management fees (Note 3) 498,603 663,973
Professional fees 77,265 103,719
Brokerage commissions 46,265 95,085
Directors' fees and insurance 21,082 9,195
Registration fees 63,900 63,900
Total Expenses 707,115 935,872
Expense waiver (Note 3)   (139,105)
Net Expenses 707,115 796,767
Net Income (Loss) $ 89,894,322 $ 76,615,279
Net Income (Loss) per limited partner share $ 8.97 $ 2.93
Net Income (Loss) per weighted average limited partner share $ 8.81 $ 3.24
Weighted average limited partner shares outstanding 10,205,000 23,677,222