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| Rocky Mountain (PADD 4) Ending Stocks of Isobutane-Isobutylene (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 | 103 | 59 | 52 | 85 | 76 | 120 | 136 | 123 | 131 | |
| 1990's | 140 | 140 | 172 | 209 | 152 | 177 | 143 | 134 | 189 | 242 |
| 2000's | 185 | 182 | 224 | 191 | 164 | 158 | 136 | 172 | 129 | 156 |
| 2010's | 152 | 156 | 147 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 3/15/2013 |
| Next Release Date: 9/27/2013 |