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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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|Montana Natural Gas % of Total Residential - Sales  (Percent)
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|Montana 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                                                                                                                              | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0
|2003                                                                                                                              | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0
|2004                                                                                                                              | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0
|                                                                                                                                 
|2005                                                                                                                              | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0
|2006                                                                                                                              | 100.0 | 100.0 | 100.0 | 100.0 | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.9  | 99.9  | 99.9 
|2007                                                                                                                              | 99.9  | 99.9  | 99.8  | 99.8  | 99.7  | 100.0 | 99.8  | 99.8  | 99.8  | 99.8  | 99.9  | 99.9 
|2008                                                                                                                              | 99.9  | 99.9  | 99.9  | 99.9  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.9  | 99.9  | 99.9 
|2009                                                                                                                              | 99.8  | 99.9  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.9  | 99.9  | 99.9 
|                                                                                                                                 
|2010                                                                                                                              | 99.8  | 99.9  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.9  | 99.9  | 99.9 
|2011                                                                                                                              | 99.9  | 99.9  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.8  | 99.9  | 99.8  | 99.9 
|2012                                                                                                                              | 99.9  | 99.9  | 99.8  | 99.8  | 99.9  | 99.9  | 99.9  | 99.9  | 99.9  | 99.8  | 99.8  | 99.8 
|2013                                                                                                                              | 99.9  | 99.9  | 99.9  | 99.8  | 99.9  | 99.9  | 99.8  | 99.7  | 99.8  | 99.9  | 99.9  | 99.9 
|2014                                                                                                                              | 99.9  | 99.9  | 99.9  | 99.9  | 99.9  | 99.9  | 99.8  | 99.8  | 99.8  | 99.8  | 99.7  | 99.5 
|                                                                                                                                 
|2015                                                                                                                              | 99.7  | 99.7  | 99.7  | 99.7  | 99.8  | 99.8  | 99.7  | 99.7  | 99.8  | 99.7  | 99.8  | 99.8 
|2016                                                                                                                              | 99.7  | 99.6  | 99.6  | 99.6  | 99.5  | 99.5  | 99.5  | 99.5  | 99.5  | 99.6  | 99.5  | 99.5 
|2017                                                                                                                              | 99.4  | 99.3  | 99.4  | 99.4  | 99.4  | 99.3  | 99.3  | 99.4  | 99.5  | 99.5  | 99.5  | 99.5 
|2018                                                                                                                              | 99.5  | 99.5  | 99.5  | 99.5  | 99.5  | 99.5  | 99.4  | 99.4  | 99.4  | 99.5  | 99.5  | 99.5 
|2019                                                                                                                              | 99.6  | 99.6  | 99.6  | 99.6  | 99.6  | 99.6  | 99.5  | 99.5  | 99.5  | 99.6  | 99.6  | 99.6 
|                                                                                                                                 
|2020                                                                                                                              | 99.7  | 99.7  | 99.7  | 99.7  | 99.7  | 99.7  | 99.6  | 99.6  | 99.7  | 99.5  | 99.7  | 99.7 
|2021                                                                                                                              | 99.7  | 99.7  | 99.7  | 99.7  | 99.7  | 99.7  | 99.7  | 99.7  | 99.7  | 99.7  | 99.8  | 99.8 
|2022                                                                                                                              | 99.8  | 99.8  | 99.8  | 99.7  | 99.8  | 99.7  | 99.7  | 99.7  | 99.7  | 99.7  | 99.8  | 99.8 
|2023                                                                                                                              | 99.8  | 99.8  | 99.8  | 99.8  | 99.7  | 99.7  | 99.7  | 99.8  | 99.7  | 99.8  | 99.9  | 99.9 
|2024                                                                                                                              | 99.9  | 99.9  | 99.9  | 99.9  | 99.9  |       |       |       |       |       |       |      
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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