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|View History: Annual Download Data (XLS File)                                         
|View History: Annual                                                                   
|View History: Annual                                                                   
|View History:                                                                          
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|Illinois Natural Gas Average Consumption per Commercial Consumer  (Thousand Cubic Feet)
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|Illinois Natural Gas Average Consumption per Commercial Consumer  (Thousand Cubic Feet)
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|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    |        |        |        |        |        |        |       
|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
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|Release Date: 7/31/2024                                                                                                          
|Next Release Date: 8/30/2024