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| Refining District Minnesota-Wisconsin-North Dakota-South Dakota Refinery Stocks of Isobutane (Thousand Barrels) | ||||||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2010's | 81 | 85 | 70 | 62 | 62 | 66 | 50 | 59 | 36 | 46 |
| 2020's | 51 | 35 | 38 | 54 | 32 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 2/6/2026 |
| Next Release Date: 8/31/2026 |