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| Rocky Mountain (PADD 4) Refinery Propane/Propylene Working Storage Capacity as of January 1 (Thousand Barrels) | |||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980's | 174 | 174 | 175 | 174 | 179 | 179 | 185 | 168 | ||
| 1990's | 176 | 176 | 175 | 173 | 168 | 165 | NA | 168 | NA | 168 |
| 2000's | 168 | 168 | 168 | 168 | 167 | 174 | 171 | 171 | 172 | 174 |
| 2010's | 174 | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2020's | -- | -- | -- | -- | -- | -- |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 6/20/2025 |
| Next Release Date: 6/19/2026 |