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| Illinois Natural Gas Number of Residential Consumers - Sales (Number of Elements) | |||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1990's | 3,509,907 | 3,538,850 | 3,563,039 | |||||||
| 2000's | 3,571,023 | 3,593,397 | 3,566,995 | 3,548,262 | 3,592,616 | 3,794,373 | 3,619,628 | |||
| 2010's | 3,568,120 | 3,594,047 | 3,605,796 | 3,550,217 | 3,570,339 | 3,545,188 | 3,565,723 | 3,570,308 | 3,600,050 | 3,634,860 |
| 2020's | 3,685,778 | 3,734,902 | 3,755,715 | 3,779,176 | 3,806,252 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 11/28/2025 |
| Next Release Date: 12/31/2025 |