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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 % of Total Residential - Sales  (Percent)
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|Illinois Natural Gas % of Total Residential - Sales  (Percent)
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|Year                                                                                                                              | Jan  | Feb  | Mar  | Apr  | May  | Jun  | Jul  | Aug  | Sep  | Oct  | Nov  | Dec 
|--------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ----
|2002                                                                                                                              | 91.6 | 91.6 | 91.6 | 90.1 | 88.6 | 87.3 | 87.4 | 87.0 | 88.0 | 85.8 | 89.9 | 91.5
|2003                                                                                                                              | 90.1 | 90.6 | 90.0 | 88.4 | 85.6 | 89.0 | 89.6 | 89.9 | 87.9 | 88.7 | 89.0 | 89.9
|2004                                                                                                                              | 90.4 | 90.1 | 88.2 | 89.0 | 85.3 | 90.9 | 88.8 | 90.7 | 87.3 | 90.4 | 89.7 | 90.6
|                                                                                                                                 
|2005                                                                                                                              | 90.3 | 89.5 | 89.5 | 88.0 | 86.3 | 84.5 | 90.3 | 88.8 | 84.8 | 88.0 | 88.9 | 89.9
|2006                                                                                                                              | 90.1 | 89.9 | 89.6 | 89.0 | 88.4 | 86.8 | 89.6 | 88.5 | 87.1 | 87.7 | 88.6 | 88.7
|2007                                                                                                                              | 89.0 | 89.3 | 89.6 | 88.8 | 88.9 | 86.8 | 87.9 | 87.6 | 87.1 | 87.5 | 87.1 | 88.3
|2008                                                                                                                              | 88.4 | 88.4 | 88.3 | 88.0 | 88.1 | 87.1 | 85.3 | 86.6 | 86.3 | 85.6 | 87.1 | 87.5
|2009                                                                                                                              | 88.0 | 87.7 | 87.3 | 87.0 | 86.3 | 86.2 | 85.5 | 86.0 | 85.8 | 86.0 | 86.9 | 88.3
|                                                                                                                                 
|2010                                                                                                                              | 88.5 | 88.3 | 87.7 | 87.1 | 86.3 | 87.4 | 86.4 | 87.0 | 86.5 | 86.4 | 87.5 | 88.9
|2011                                                                                                                              | 88.5 | 88.3 | 88.1 | 87.3 | 87.1 | 87.5 | 86.7 | 87.0 | 87.0 | 86.7 | 87.9 | 88.4
|2012                                                                                                                              | 89.0 | 88.1 | 84.8 | 86.7 | 83.5 | 87.2 | 86.6 | 86.6 | 88.5 | 88.5 | 89.1 | 88.7
|2013                                                                                                                              | 88.4 | 87.3 | 87.5 | 84.9 | 83.4 | 84.8 | 86.6 | 86.7 | 87.1 | 89.4 | 89.4 | 88.5
|2014                                                                                                                              | 88.4 | 87.9 | 87.0 | 84.7 | 83.9 | 84.9 | 86.3 | 86.1 | 87.5 | 87.4 | 89.2 | 86.4
|                                                                                                                                 
|2015                                                                                                                              | 87.1 | 87.3 | 84.6 | 83.4 | 83.0 | 83.4 | 85.2 | 84.6 | 86.3 | 87.1 | 88.1 | 86.8
|2016                                                                                                                              | 87.5 | 86.5 | 84.5 | 84.7 | 82.9 | 86.3 | 85.7 | 86.0 | 86.1 | 87.1 | 88.1 | 88.2
|2017                                                                                                                              | 86.0 | 84.9 | 86.0 | 82.4 | 81.9 | 83.3 | 85.7 | 82.6 | 86.9 | 90.2 | 88.1 | 91.9
|2018                                                                                                                              | 87.0 | 86.1 | 86.6 | 85.5 | 77.5 | 84.1 | 85.1 | 85.7 | 88.0 | 90.9 | 90.3 | 87.8
|2019                                                                                                                              | 89.1 | 86.8 | 86.5 | 83.9 | 83.2 | 82.8 | 85.4 | 87.1 | 87.2 | 92.4 | 90.2 | 88.3
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|2020                                                                                                                              | 88.8 | 88.2 | 86.0 | 86.4 | 84.8 | 83.8 | 86.7 | 81.7 | 90.5 | 91.1 | 90.8 | 90.7
|2021                                                                                                                              | 89.8 | 89.9 | 85.7 | 87.3 | 87.0 | 84.1 | 89.2 | 88.7 | 89.5 | 92.2 | 92.9 | 90.0
|2022                                                                                                                              | 91.0 | 88.5 | 87.6 | 86.3 | 84.4 | 85.1 | 86.8 | 91.1 | 89.7 | 91.5 | 91.5 | 91.0
|2023                                                                                                                              | 89.8 | 89.0 | 89.7 | 86.3 | 83.5 | 87.0 | 88.8 | 88.0 | 86.7 | 93.2 | 91.0 | 92.3
|2024                                                                                                                              | NA   | 90.1 | 90.3 | 86.8 | 84.7 |      |      |      |      |      |      |     
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|- = 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