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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 Commercial Natural Gas Deliveries in U.S. Total Represented by the Price  (Percent)
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|Percent of Commercial 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 
|--------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ----
|1983                                                                                                                              | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA  
|1984                                                                                                                              | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA  
|                                                                                                                                 
|1985                                                                                                                              | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA  
|1986                                                                                                                              | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA  
|1987                                                                                                                              | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA   | NA  
|1988                                                                                                                              | 93.8 | 93.3 | 92.5 | 91.7 | 89.4 | 87.5 | 86.3 | 87.2 | 87.6 | 87.4 | 88.7 | 89.7
|1989                                                                                                                              | 91.0 | 91.2 | 90.8 | 89.2 | 88.2 | 86.1 | 85.1 | 85.1 | 84.6 | 85.2 | 87.7 | 90.7
|                                                                                                                                 
|1990                                                                                                                              | 90.8 | 88.8 | 88.3 | 86.9 | 85.5 | 83.8 | 81.8 | 81.7 | 80.3 | 81.2 | 84.7 | 87.9
|1991                                                                                                                              | 89.4 | 88.5 | 87.8 | 84.0 | 83.2 | 80.0 | 79.3 | 81.6 | 78.1 | 78.7 | 85.1 | 86.1
|1992                                                                                                                              | 87.1 | 85.2 | 84.7 | 84.0 | 79.3 | 79.4 | 76.0 | 76.1 | 78.0 | 80.9 | 83.1 | 85.6
|1993                                                                                                                              | 86.6 | 86.3 | 86.4 | 84.9 | 82.2 | 79.0 | 79.2 | 78.0 | 78.3 | 79.9 | 83.0 | 85.1
|1994                                                                                                                              | 83.7 | 83.9 | 82.8 | 78.6 | 74.5 | 70.5 | 68.7 | 72.6 | 72.2 | 74.3 | 77.8 | 82.1
|                                                                                                                                 
|1995                                                                                                                              | 81.6 | 81.7 | 81.2 | 77.2 | 71.8 | 71.4 | 67.3 | 66.6 | 67.9 | 69.7 | 75.6 | 79.2
|1996                                                                                                                              | 83.2 | 83.3 | 81.8 | 79.5 | 74.6 | 70.0 | 67.8 | 66.3 | 67.1 | 69.1 | 75.7 | 78.1
|1997                                                                                                                              | 78.7 | 78.3 | 73.9 | 71.8 | 65.5 | 61.6 | 59.4 | 57.9 | 59.4 | 62.8 | 70.3 | 72.9
|1998                                                                                                                              | 73.2 | 72.9 | 73.6 | 67.7 | 62.6 | 62.9 | 56.0 | 53.3 | 57.0 | 59.2 | 64.5 | 68.3
|1999                                                                                                                              | 73.1 | 69.7 | 69.2 | 65.3 | 61.0 | 61.0 | 58.2 | 56.5 | 60.0 | 61.6 | 63.0 | 67.9
|                                                                                                                                 
|2000                                                                                                                              | 67.2 | 68.2 | 63.6 | 62.3 | 60.9 | 58.0 | 57.0 | 59.2 | 57.5 | 59.8 | 63.9 | 68.3
|2001                                                                                                                              | 72.9 | 71.8 | 69.2 | 66.5 | 61.0 | 59.6 | 54.6 | 53.9 | 54.0 | 60.1 | 65.0 | 68.1
|2002                                                                                                                              | 79.8 | 80.7 | 81.5 | 76.8 | 73.0 | 73.2 | 71.2 | 71.6 | 69.5 | 73.2 | 78.7 | 79.6
|2003                                                                                                                              | 79.9 | 80.7 | 80.8 | 77.9 | 74.2 | 74.7 | 72.4 | 74.5 | 73.5 | 74.6 | 78.0 | 80.5
|2004                                                                                                                              | 81.6 | 81.7 | 79.2 | 77.7 | 73.8 | 72.2 | 71.7 | 71.0 | 71.4 | 73.3 | 78.0 | 80.3
|                                                                                                                                 
|2005                                                                                                                              | 84.8 | 85.0 | 84.4 | 82.5 | 79.4 | 78.2 | 75.6 | 76.2 | 74.8 | 78.9 | 81.3 | 84.0
|2006                                                                                                                              | 84.0 | 84.2 | 84.0 | 80.9 | 78.5 | 75.8 | 74.4 | 72.5 | 74.6 | 77.3 | 80.3 | 82.6
|2007                                                                                                                              | 83.2 | 84.0 | 83.5 | 81.2 | 77.9 | 76.2 | 74.3 | 72.5 | 72.3 | 74.7 | 79.6 | 82.3
|2008                                                                                                                              | 82.6 | 82.3 | 82.3 | 79.7 | 76.6 | 76.3 | 73.4 | 72.2 | 72.5 | 75.3 | 79.4 | 81.9
|2009                                                                                                                              | 82.4 | 81.1 | 80.8 | 77.7 | 74.4 | 73.3 | 70.5 | 68.5 | 69.3 | 73.3 | 75.8 | 80.1
|                                                                                                                                 
|2010                                                                                                                              | 81.2 | 81.7 | 79.7 | 75.7 | 73.0 | 71.9 | 70.6 | 69.8 | 68.5 | 71.8 | 77.7 | 80.2
|2011                                                                                                                              | 72.8 | 72.0 | 69.6 | 66.5 | 63.9 | 61.7 | 60.1 | 58.1 | 57.8 | 61.4 | 66.1 | 69.1
|2012                                                                                                                              | 71.5 | 70.1 | 68.1 | 62.8 | 59.2 | 59.1 | 57.9 | 55.9 | 56.4 | 59.9 | 65.3 | 67.6
|2013                                                                                                                              | 70.2 | 69.7 | 68.8 | 66.1 | 62.6 | 58.4 | 56.7 | 56.2 | 56.6 | 60.5 | 65.7 | 69.2
|2014                                                                                                                              | 70.7 | 70.6 | 69.4 | 65.1 | 60.5 | 58.1 | 55.7 | 55.2 | 55.7 | 58.8 | 66.0 | 68.4
|                                                                                                                                 
|2015                                                                                                                              | 70.8 | 71.0 | 69.9 | 64.8 | 61.2 | 57.9 | 56.9 | 55.6 | 55.8 | 59.5 | 63.8 | 67.6
|2016                                                                                                                              | 70.4 | 69.4 | 66.7 | 65.0 | 60.2 | 58.0 | 56.9 | 54.7 | 56.2 | 59.9 | 63.5 | 68.2
|2017                                                                                                                              | 70.5 | 69.0 | 67.7 | 65.0 | 60.8 | 58.2 | 57.2 | 55.9 | 56.2 | 61.5 | 65.8 | 69.1
|2018                                                                                                                              | 71.5 | 69.3 | 68.6 | 65.4 | 60.0 | 57.7 | 56.4 | 55.1 | 56.9 | 61.3 | 66.6 | 69.0
|2019                                                                                                                              | 70.1 | 69.3 | 69.1 | 64.1 | 60.6 | 58.1 | 56.0 | 55.6 | 56.2 | 60.3 | 66.7 | 68.8
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|2020                                                                                                                              | 69.5 | 69.0 | 66.6 | 63.9 | 59.0 | 56.6 | 56.0 | 54.5 | 55.1 | 60.8 | 65.5 | 69.7
|2021                                                                                                                              | 70.5 | 70.3 | 67.9 | 64.7 | 60.3 | 57.2 | 55.2 | 55.0 | 56.7 | 59.8 | 65.7 | 68.5
|2022                                                                                                                              | 71.4 | 69.9 | 68.4 | 65.4 | 60.7 | 57.5 | 55.7 | 55.0 | 55.6 | 60.1 | 66.6 | 70.2
|2023                                                                                                                              | 70.2 | 69.6 | 68.7 | 65.1 | 60.7 | 57.5 | 55.6 | 54.9 | 55.9 | 61.2 | 66.1 | 68.7
|2024                                                                                                                              | 70.9 | 68.9 |      |      |      |      |      |      |      |      |      |     
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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: 4/30/2024                                                                                                          
|Next Release Date: 5/31/2024