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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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|Percent of Industrial Natural Gas Deliveries in U.S. Total Represented by the Price  (Percent)
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|Percent of Industrial Natural Gas Deliveries in U.S. Total Represented by the Price  (Percent)
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|Year                                                                                                                              | Jan  | Feb  | Mar  | Apr  | May  | Jun  | Jul  | Aug  | Sep  | Oct  | Nov  | Dec 
|--------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ----
|2001                                                                                                                              | 23.5 | 23.2 | 22.0 | 21.0 | 19.5 | 19.2 | 20.2 | 19.6 | 19.8 | 20.3 | 20.2 | 20.7
|2002                                                                                                                              | 20.3 | 20.5 | 20.2 | 26.3 | 23.9 | 25.5 | 24.0 | 22.5 | 22.5 | 21.7 | 21.8 | 23.1
|2003                                                                                                                              | 21.4 | 22.1 | 21.3 | 20.9 | 20.3 | 19.1 | 24.7 | 22.9 | 22.9 | 23.3 | 22.7 | 23.5
|2004                                                                                                                              | 23.1 | 23.6 | 22.8 | 23.3 | 23.4 | 25.0 | 24.9 | 24.0 | 22.8 | 22.6 | 23.5 | 24.5
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|2005                                                                                                                              | 24.8 | 24.3 | 24.6 | 23.9 | 24.2 | 23.7 | 24.5 | 24.6 | 23.2 | 23.2 | 23.4 | 23.7
|2006                                                                                                                              | 23.7 | 23.7 | 23.8 | 23.5 | 23.8 | 23.3 | 23.6 | 23.7 | 22.0 | 22.9 | 23.0 | 23.4
|2007                                                                                                                              | 22.7 | 23.0 | 22.4 | 22.3 | 23.2 | 23.8 | 22.1 | 22.3 | 21.2 | 21.3 | 20.8 | 21.4
|2008                                                                                                                              | 20.5 | 20.5 | 21.4 | 21.9 | 21.3 | 20.8 | 20.7 | 20.4 | 19.1 | 18.9 | 19.6 | 19.8
|2009                                                                                                                              | 20.1 | 19.9 | 19.4 | 18.6 | 19.0 | 18.7 | 18.6 | 18.3 | 18.0 | 17.9 | 17.8 | 18.9
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|2010                                                                                                                              | 18.3 | 17.8 | 17.6 | 17.0 | 17.1 | 17.3 | 17.5 | 17.0 | 16.7 | 16.1 | 16.9 | 17.1
|2011                                                                                                                              | 16.8 | 16.6 | 16.6 | 16.0 | 16.3 | 15.9 | 16.5 | 16.0 | 15.8 | 15.9 | 16.2 | 16.6
|2012                                                                                                                              | 16.1 | 16.2 | 16.0 | 15.5 | 15.6 | 15.6 | 16.1 | 16.6 | 16.5 | 16.3 | 16.9 | 17.0
|2013                                                                                                                              | 17.0 | 17.0 | 16.8 | 16.8 | 16.2 | 16.0 | 15.8 | 15.9 | 16.3 | 16.6 | 16.9 | 17.2
|2014                                                                                                                              | 15.5 | 16.1 | 15.8 | 14.9 | 14.8 | 14.5 | 14.7 | 14.3 | 13.9 | 13.7 | 14.7 | 15.0
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|2015                                                                                                                              | 14.8 | 15.2 | 15.4 | 14.6 | 15.1 | 14.6 | 14.6 | 14.3 | 14.5 | 14.7 | 14.8 | 14.9
|2016                                                                                                                              | 15.4 | 15.8 | 15.5 | 14.6 | 14.7 | 14.7 | 14.3 | 14.7 | 14.6 | 14.5 | 14.6 | 15.0
|2017                                                                                                                              | 15.2 | 15.2 | 15.2 | 14.8 | 14.2 | 14.8 | 14.8 | 14.5 | 14.0 | 14.5 | 14.8 | 15.2
|2018                                                                                                                              | 15.2 | 14.8 | 15.3 | 15.0 | 14.1 | 14.1 | 13.9 | 14.2 | 14.0 | 14.3 | 14.5 | 14.5
|2019                                                                                                                              | 13.7 | 14.1 | 13.7 | 13.0 | 12.7 | 12.4 | 13.0 | 12.4 | 12.2 | 12.0 | 12.7 | 13.0
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|2020                                                                                                                              | 13.1 | 13.2 | 13.0 | 12.8 | 13.1 | 12.9 | 12.9 | 12.7 | 13.1 | 12.9 | 13.1 | 13.7
|2021                                                                                                                              | 13.5 | 12.3 | 13.8 | 13.6 | 13.3 | 13.0 | 13.0 | 13.1 | 13.5 | 13.4 | 13.6 | 13.9
|2022                                                                                                                              | 13.3 | 13.8 | 14.1 | 13.9 | 13.4 | 13.3 | 13.3 | 13.0 | 12.9 | 13.1 | 13.3 | 13.5
|2023                                                                                                                              | 13.6 | 13.7 | 13.3 | 12.9 | 13.0 | 12.4 | 12.5 | 13.2 | 12.5 | 13.0 | 13.8 | 13.7
|2024                                                                                                                              | 14.1 | 14.4 |      |      |      |      |      |      |      |      |      |     
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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: 4/30/2024                                                                                                          
|Next Release Date: 5/31/2024