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| Rocky Mountain (PADD 4) 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 | 98 | 106 | 94 | 86 | 111 | 143 | 100 | 101 | 83 | 84 |
| 2020's | 77 | 97 | 74 | 118 | 109 |
| - = 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 |