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| Rocky Mountain (PADD 4) Ending Stocks of Ethane-Ethylene (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 | 0 | 1 | 1 | 134 | 140 | 131 | 128 | 146 | 134 | |
| 1990's | 174 | 186 | 178 | 176 | 215 | 217 | 220 | 213 | 210 | 457 |
| 2000's | 455 | 463 | 522 | 445 | 332 | 323 | 423 | 422 | 409 | 418 |
| 2010's | 410 | 406 | 400 | 412 | 518 | 432 | 436 | 468 | 465 | 556 |
| 2020's | 932 | 1,299 | -- | -- | -- |
| - = 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 |