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| Illinois Natural Gas Average Consumption per Commercial Consumer (Thousand 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 | 953 | 919 | 927 | |||||||
| 1970's | 944 | 988 | 1,039 | 1,007 | 973 | 963 | 1,087 | 1,078 | 1,086 | 1,005 |
| 1980's | 931 | 897 | 885 | 824 | 925 | 834 | 785 | 792 | 773 | 776 |
| 1990's | 777 | 742 | 746 | 758 | 753 | 770 | 823 | 755 | 643 | 686 |
| 2000's | 723 | 679 | 731 | 751 | 745 | 729 | 653 | 686 | 745 | 757 |
| 2010's | 680 | 735 | 632 | 816 | 837 | 727 | 715 | 728 | 810 | 825 |
| 2020's | 719 | 747 | 817 | 730 | 695 |
| - = 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 |