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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 Delivered to Commercial Consumers for the Account of Others  (Million Cubic Feet)
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|Illinois Natural Gas Delivered to Commercial Consumers for the Account of Others  (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 
|--------------------------------------------------------------------------------------------------------------------------------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | -------
|1980's                                                                                                                            |         |         |         |         |         |         |         | 26,117  | 49,942  | 60,159 
|1990's                                                                                                                            | 84,936  | 79,512  | 83,264  | 90,812  | 93,206  | 101,211 | 100,495 | 92,730  | 91,872  | 107,830
|2000's                                                                                                                            | 117,228 | 111,421 | 120,931 | 120,455 | 120,031 | 118,168 | 118,383 | 117,571 | 126,178 | 130,862
|2010's                                                                                                                            | 114,430 | 133,561 | 118,946 | 142,228 | 151,386 | 138,090 | 139,325 | 142,396 | 157,378 | 160,147
|2020's                                                                                                                            | 141,397 | 147,015 | 160,276 |         |         |         |         |         |         |        
|- = 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