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| West Coast (PADD 5) Stock Change of Propylene (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2010 | -6 | 34 | -7 | -13 | -11 | 27 | -16 | -4 | 7 | 0 | -9 | 18 |
| 2011 | 11 | -26 | 1 | 2 | -8 | 14 | 7 | -11 | -1 | -1 | -9 | -1 |
| 2012 | 10 | -12 | 8 | 5 | 3 | 4 | 7 | -18 | -5 | -1 | 0 | 11 |
| 2013 | -1 | -16 | 23 | -5 | 1 | 13 | -5 | -15 | 2 | 0 | 7 | 9 |
| 2014 | -10 | 4 | 24 | -18 | -9 | -2 | 6 | -6 | 1 | 7 | 7 | -4 |
| 2015 | -14 | -1 | 3 | -3 | -15 | 7 | -4 | 4 | -4 | -1 | 9 | -9 |
| 2016 | 20 | 8 | -4 | -18 | 12 | -14 | 6 | -8 | 7 | 9 | -2 | -14 |
| 2017 | 0 | 4 | 11 | -12 | 5 | -8 | 2 | 15 | -9 | 1 | -5 | 11 |
| 2018 | 16 | -22 | -2 | 19 | -4 | -22 | 15 | -18 | 3 | -1 | -2 | 3 |
| 2019 | 0 | 1 | 0 | -8 | -3 | 10 | 3 | -3 | 1 | -2 | 4 | -1 |
| 2020 | -1 | -3 | 1 | 5 | 0 | -7 | 0 | 2 | -4 | 2 | 0 | 2 |
| 2021 | 0 | 4 | -1 | -3 | -3 | 2 | 3 | -3 | 3 | 3 | 0 | 0 |
| 2022 | -1 | 1 | -4 | -1 | 0 | -1 | 0 | -1 | -2 | -1 | 5 | 3 |
| 2023 | -2 | 8 | -4 | -1 | -6 | 12 | 2 | -10 | -2 | 2 | 3 | 2 |
| 2024 | 9 | -8 | -2 | -2 | -2 | 5 | -3 | -1 | -1 | 3 | -2 | -1 |
| 2025 | 5 | -5 | 4 | -2 | -2 | -1 | 0 | 2 | -6 | 2 | 6 | |
| - = 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 |