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| West Coast (PADD 5) Field Production 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980's | 221 | 257 | 121 | 770 | 966 | 1,045 | 2,698 | 2,997 | 2,306 | |
| 1990's | 2,260 | 4,418 | 4,877 | 5,267 | 4,922 | 5,105 | 5,740 | 7,206 | 6,187 | 5,470 |
| 2000's | 4,797 | 4,981 | 4,817 | 4,977 | 5,906 | 6,049 | 5,777 | 6,166 | 6,230 | 6,096 |
| 2010's | 4,612 | 5,454 | 5,393 | 4,704 | 4,195 | 4,123 | 4,180 | 4,693 | 4,735 | 4,130 |
| 2020's | 3,206 | 3,057 | 3,043 | 2,224 | 2,025 |
| - = 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 |