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| U.S. 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 | 0.91 | 0.96 | 0.99 | 1.04 | 1.06 | |||||
| 1990's | 1.10 | 1.13 | 1.16 | 1.15 | 1.14 | 1.13 | 1.15 | 1.25 | 1.31 | 1.33 |
| 2000's | 1.34 | 1.42 | 1.41 | 1.43 | 1.43 | 1.42 | 1.41 | 1.43 | 1.46 | 1.41 |
| 2010's | 1.39 | 1.40 | 1.42 | 1.44 | 1.45 | 1.40 | 1.43 | 1.41 | 1.40 | 1.29 |
| 2020's | 1.34 | 1.27 | 1.29 | 1.33 | 1.31 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 12/31/2025 |
| Next Release Date: 8/31/2026 |