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|View History:  Monthly  Annual Download Data (XLS File)      
|View History:  Monthly  Annual                                
|View History:  Monthly  Annual                                
|View History:                                                 
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|Illinois Natural Gas Marketed Production  (Million Cubic Feet)
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|Illinois Natural Gas Marketed Production  (Million 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                                                                                                                            |        |        |        |        |        |        |        | 5,144  | 4,380  | 3,800 
|1970's                                                                                                                            | 4,850  | 498    | 1,194  | 1,638  | 1,436  | 1,440  | 1,556  | 1,003  | 1,159  | 1,585 
|1980's                                                                                                                            | 1,574  | 1,295  | 1,162  | 1,030  | 1,530  | 1,324  | 1,887  | 1,371  | 1,338  | 1,477 
|1990's                                                                                                                            | 677    | 466    | 347    | 340    | 333    | 335    | 298    | 231    | 209    | 195   
|2000's                                                                                                                            | 189    | 185    | 180    | 174    | 170    | 166    | 170    | 1,394  | 1,193  | 1,443 
|2010's                                                                                                                            | 1,702  | 2,121  | 2,125  | 2,887  | 1,929  | 2,080  | 2,183  | 2,131  | 2,464  | 2,150 
|2020's                                                                                                                            | 1,840  | 1,637  | 2,003  |        |        |        |        |        |        |       
|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
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|Release Date: 3/29/2024                                                                                                          
|Next Release Date: 4/30/2024