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| Iowa Distillate Fuel Oil, Greater Than 500 ppm Sulfur Stocks at Refineries, Bulk Terminals, and Natural Gas Plants (Thousand Barrels) | ||||||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1990's | 206 | 214 | 199 | 173 | 230 | 236 | 255 | |||
| 2000's | 144 | 86 | 182 | 167 | 176 | 220 | 58 | 2 | 2 | 1 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 3/31/2026 |
| Next Release Date: 8/31/2026 |