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| Appalachian No. 1 Refinery District Sulfur Content (Weighted Average) of Crude Oil Input to Refineries (Percent) | ||||||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980's | 0.49 | 0.65 | 0.60 | 0.60 | 0.65 | |||||
| 1990's | 0.67 | 0.79 | 0.78 | 0.81 | 0.88 | 1.01 | 0.96 | 0.96 | 1.05 | 1.18 |
| 2000's | 1.29 | 1.27 | 1.40 | 1.47 | 1.48 | 1.49 | 1.42 | 1.50 | 1.55 | 1.60 |
| 2010's | 1.37 | 1.61 | 1.65 | 1.65 | 1.56 | 1.63 | 1.59 | 1.67 | 1.60 | 1.62 |
| 2020's | 1.59 | 1.62 | 1.62 | 1.77 | 1.74 |
| - = 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 |