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| Iowa Natural Gas Input Supplemental Fuels (Million Cubic Feet) | |||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1960's | 0 | 0 | 0 | |||||||
| 1970's | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1980's | 57 | 64 | 68 | 23 | 53 | 45 | 44 | 40 | 34 | 82 |
| 1990's | 81 | 46 | 45 | 84 | 123 | 96 | 301 | 137 | 17 | 12 |
| 2000's | 44 | 39 | 23 | 143 | 30 | 31 | 46 | 40 | 27 | 3 |
| 2010's | 2 | 1 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | |
| 2020's | 0 | 0 | 251 | 413 |
| - = 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: 11/28/2025 |