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| Rocky Mountain (PADD 4) Product Supplied of Isobutane-Isobutylene (Thousand Barrels) | ||||||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980's | -433 | |||||||||
| 1990's | -285 | 63 | 307 | -50 | -538 | -867 | -1,313 | -1,509 | -1,890 | -1,758 |
| 2000's | -1,803 | -1,756 | -2,465 | -2,245 | -2,358 | -2,556 | -3,443 | -3,873 | -3,743 | -4,953 |
| 2010's | -5,438 | -4,804 | -5,086 | -3,981 | -4,479 | -4,041 | -2,784 | -2,833 | -2,753 | -302 |
| 2020's | -1,692 | -2,833 | -- | -- | -- |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 10/31/2025 |
| Next Release Date: 8/31/2026 |