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| Midwest (PADD 2) 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980's | 21 | |||||||||
| 1990's | 21 | 23 | 23 | 23 | 20 | 19 | 23 | 21 | 17 | 17 |
| 2000's | 17 | 22 | 19 | 20 | 18 | 19 | 19 | 20 | 22 | 23 |
| 2010's | 24 | 29 | 29 | 34 | 43 | 48 | 54 | 53 | 59 | 62 |
| 2020's | 63 | 62 | 65 | 62 | 66 |
| - = 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 |