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| Refining District Oklahoma-Kansas-Missouri Field Production of Isobutane (Thousand Barrels per Day) | ||||||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1990's | 20 | 18 | 17 | 21 | 19 | 16 | 16 | |||
| 2000's | 16 | 19 | 15 | 16 | 13 | 15 | 15 | 15 | 16 | 15 |
| 2010's | 17 | 21 | 22 | 22 | 26 | 22 | 29 | 27 | 31 | 31 |
| 2020's | 32 | 29 | 31 | 30 | 28 | 25 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 3/31/2026 |
| Next Release Date: 8/31/2026 |