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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 Utah Represented by the Price  (Percent)
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|Percent of Industrial Natural Gas Deliveries in Utah Represented by the Price  (Percent)
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|Year                                                                                                                              | Jan  | Feb  | Mar  | Apr  | May  | Jun  | Jul  | Aug  | Sep  | Oct  | Nov  | Dec 
|--------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ----
|2001                                                                                                                              | 11.9 | 9.2  | 10.7 | 10.1 | 9.5  | 9.5  | 10.1 | 11.5 | 9.4  | 9.2  | 11.0 | 13.8
|2002                                                                                                                              | 14.0 | 13.8 | 12.6 | 15.8 | 13.0 | 13.4 | 12.1 | 13.6 | 13.5 | 12.8 | 15.0 | 13.7
|2003                                                                                                                              | 14.5 | 14.6 | 13.1 | 14.9 | 14.1 | 13.2 | 11.8 | 12.7 | 13.8 | 13.9 | 13.2 | 13.1
|2004                                                                                                                              | 13.8 | 15.2 | 13.3 | 14.6 | 12.7 | 12.7 | 18.4 | 46.5 | 26.9 | 24.3 | 23.4 | 23.8
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|2005                                                                                                                              | 18.4 | 18.6 | 18.4 | 17.7 | 18.6 | 21.3 | 20.0 | 21.2 | 21.3 | 21.5 | 18.3 | 19.9
|2006                                                                                                                              | 22.3 | 23.2 | 22.5 | 24.0 | 24.0 | 24.7 | 24.2 | 13.9 | 13.4 | 15.3 | 15.8 | 16.0
|2007                                                                                                                              | 14.4 | 13.6 | 14.4 | 14.6 | 13.3 | 12.7 | 14.5 | 14.9 | 13.8 | 13.4 | 14.2 | 14.8
|2008                                                                                                                              | 13.5 | 13.1 | 13.1 | 12.4 | 12.7 | 12.8 | 13.2 | 12.1 | 11.6 | 12.0 | 12.7 | 12.3
|2009                                                                                                                              | 13.3 | 10.3 | 12.0 | 9.8  | 11.7 | 12.8 | 11.6 | 13.4 | 14.0 | 13.1 | 12.0 | 12.5
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|2010                                                                                                                              | 12.0 | 9.8  | 10.9 | 11.7 | 12.0 | 13.3 | 13.2 | 12.6 | 13.4 | 12.8 | 11.9 | 12.6
|2011                                                                                                                              | 12.8 | 10.9 | 11.5 | 11.8 | 12.0 | 12.1 | 13.8 | 15.5 | 15.3 | 13.8 | 12.8 | 11.4
|2012                                                                                                                              | 11.5 | 10.0 | 10.7 | 10.4 | 10.9 | 11.0 | 13.4 | 11.6 | 12.3 | 10.8 | 10.6 | 9.7 
|2013                                                                                                                              | 10.4 | 10.9 | 10.1 | 10.2 | 11.9 | 11.2 | 12.4 | 12.4 | 11.4 | 11.7 | 11.4 | 10.2
|2014                                                                                                                              | 8.0  | 8.0  | 8.0  | 8.4  | 9.4  | 10.3 | 10.4 | 9.4  | 9.0  | 11.0 | 10.4 | 8.3 
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|2015                                                                                                                              | 7.5  | 6.7  | 7.2  | 7.8  | 8.9  | 10.0 | 9.5  | 7.0  | 6.6  | 6.7  | 6.3  | 5.8 
|2016                                                                                                                              | 6.4  | 5.9  | 5.9  | 6.1  | 6.4  | 6.2  | 5.6  | 4.9  | 5.1  | 4.5  | 4.4  | 5.0 
|2017                                                                                                                              | 4.2  | 4.1  | 4.6  | 4.3  | 4.8  | 5.1  | 4.8  | 4.0  | 3.7  | 3.4  | 3.4  | 3.0 
|2018                                                                                                                              | 3.4  | 3.2  | 3.6  | 3.6  | 3.4  | 3.3  | 3.3  | 2.6  | 2.4  | 3.0  | 2.8  | 3.1 
|2019                                                                                                                              | 2.9  | 2.8  | 2.5  | 2.6  | 2.6  | 2.4  | 2.1  | 2.4  | 2.4  | 2.4  | 2.4  | 2.6 
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|2020                                                                                                                              | 2.3  | 2.2  | 2.3  | 2.6  | 1.9  | 2.0  | 1.9  | 2.1  | 2.0  | 2.5  | 2.4  | 2.7 
|2021                                                                                                                              | 2.6  | 2.4  | 2.8  | 2.7  | 2.4  | 2.1  | 2.4  | 2.2  | 2.3  | 2.6  | 2.3  | 2.7 
|2022                                                                                                                              | 2.4  | 2.3  | 2.4  | 2.4  | 2.4  | 2.3  | 2.4  | 2.3  | 2.5  | 2.6  | 2.4  | 2.7 
|2023                                                                                                                              | 2.3  | 2.4  | 2.9  | 2.6  | 2.5  | 2.6  | 2.4  | 2.2  | 2.6  | 2.6  | 3.0  | 2.8 
|2024                                                                                                                              | 3.3  | 2.7  | 2.9  | NA   | NA   |      |      |      |      |      |      |     
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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