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| U.S. Refinery Net Production of Isobutane (Thousand Barrels per Day) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2005 | -19 | -33 | -39 | -30 | -39 | -39 | -31 | -31 | -35 | -30 | -12 | -27 |
| 2006 | -1 | -4 | -2 | -6 | 12 | -13 | -5 | 2 | -4 | -3 | -6 | -2 |
| 2007 | 8 | 21 | 13 | 1 | 10 | 1 | 11 | 1 | 2 | 0 | -8 | -10 |
| 2008 | 1 | 3 | 17 | 15 | 8 | 5 | -5 | 3 | 10 | -3 | -2 | 15 |
| 2009 | 7 | 7 | -4 | -4 | -13 | 0 | -14 | -1 | -10 | -5 | 3 | 16 |
| 2010 | 5 | -2 | -9 | 0 | 0 | 1 | 0 | -13 | -11 | -6 | -6 | -9 |
| 2011 | 1 | 15 | 2 | -1 | -2 | -2 | -13 | -7 | -7 | -8 | 2 | -3 |
| 2012 | 2 | 11 | 16 | 16 | -10 | -6 | 2 | -5 | -4 | 14 | -3 | -7 |
| 2013 | 6 | 14 | -8 | 4 | -5 | -1 | -4 | -8 | -11 | -15 | -12 | -20 |
| 2014 | -12 | -4 | -4 | -3 | -1 | -7 | -21 | -5 | -5 | -8 | -10 | -22 |
| 2015 | -11 | -2 | -4 | -6 | -9 | -2 | -9 | -3 | -7 | -9 | 2 | -10 |
| 2016 | -15 | -1 | -1 | -3 | -2 | -5 | -4 | -4 | -10 | -10 | -13 | -13 |
| 2017 | -10 | 4 | 13 | -1 | -7 | -5 | -11 | -5 | -8 | 0 | -23 | -24 |
| 2018 | -21 | -19 | -3 | -13 | -13 | -12 | -18 | -1 | -10 | -16 | -17 | -20 |
| 2019 | -11 | -4 | -10 | -13 | -9 | -10 | -15 | -17 | -14 | -17 | -22 | -32 |
| 2020 | -25 | -20 | -6 | -12 | -24 | -15 | -15 | -24 | -25 | -24 | -27 | -32 |
| 2021 | -24 | -14 | 4 | -10 | -3 | -1 | -5 | -7 | -13 | -7 | -12 | -10 |
| 2022 | -6 | -6 | -17 | -23 | -13 | -15 | -15 | -15 | -14 | -17 | -20 | -12 |
| 2023 | -10 | -18 | -6 | -16 | -7 | -15 | -22 | -17 | -24 | -14 | -19 | -14 |
| 2024 | -18 | -16 | -13 | -17 | -20 | -22 | -16 | -15 | -3 | -15 | -16 | -16 |
| 2025 | -10 | -9 | 3 | -31 | -39 | -36 | -18 | -12 | -18 | -9 | -20 | |
| - = 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: 2/27/2026 |
Referring Pages: