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Download Data (XLS File) |
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| West Coast (PADD 5) Refinery Net Production of Isobutane-Isobutylene (Thousand Barrels per Day) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2005 | -7 | -10 | -13 | -7 | -11 | -9 | -12 | -13 | -13 | -10 | -6 | -10 |
| 2006 | 6 | 5 | 2 | 0 | 5 | 3 | 1 | 4 | -2 | -7 | -1 | 0 |
| 2007 | -4 | 7 | 4 | 2 | 1 | -3 | 0 | 1 | -3 | -3 | 3 | -2 |
| 2008 | 7 | 0 | 5 | -1 | -1 | 1 | -1 | 4 | -2 | -1 | -2 | 2 |
| 2009 | -2 | 10 | -3 | 1 | -1 | 0 | -2 | 3 | 1 | 1 | -4 | 3 |
| 2010 | 4 | 1 | -1 | -2 | 0 | 3 | 1 | -1 | 3 | 2 | 3 | 2 |
| 2011 | 2 | 8 | -6 | 7 | -4 | -2 | -3 | 1 | 2 | -5 | 5 | -1 |
| 2012 | 2 | 1 | 2 | -6 | -10 | -1 | 1 | -3 | 3 | 1 | -7 | -5 |
| 2013 | 3 | 6 | -4 | 5 | -7 | 1 | -3 | -1 | 1 | 0 | -4 | -7 |
| 2014 | -3 | -1 | 2 | 0 | -1 | 0 | 1 | -2 | 2 | 1 | 1 | -3 |
| 2015 | 3 | 5 | 6 | 3 | -1 | 2 | 3 | 3 | 6 | 4 | 3 | 1 |
| 2016 | -3 | 4 | 8 | 3 | 5 | 3 | 5 | 6 | 6 | 2 | -1 | 2 |
| 2017 | 4 | -1 | 4 | 3 | 3 | 6 | 3 | 8 | 6 | 8 | 0 | 3 |
| 2018 | 2 | 4 | 13 | 4 | 3 | 8 | 6 | 7 | 8 | 2 | 1 | 1 |
| 2019 | 2 | 5 | 6 | 5 | 2 | 4 | 4 | 4 | 3 | 5 | 5 | -1 |
| 2020 | 1 | 1 | 8 | 2 | -1 | 4 | 5 | 5 | 0 | 2 | -1 | -6 |
| 2021 | -3 | 0 | 3 | 5 | 3 | 3 | 3 | 5 | 4 | 3 | 3 | 4 |
| 2022 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2023 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2024 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2025 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | |
| - = 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 |