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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 Arizona Represented by the Price  (Percent)
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|Percent of Industrial Natural Gas Deliveries in Arizona Represented by the Price  (Percent)
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|Year                                                                                                                              | Jan  | Feb  | Mar  | Apr  | May  | Jun  | Jul  | Aug  | Sep  | Oct  | Nov  | Dec 
|--------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ----
|2001                                                                                                                              | 33.6 | 44.6 | 45.1 | 46.7 | 45.0 | 48.3 | 48.5 | 41.4 | 43.8 | 54.6 | 54.8 | 55.3
|2002                                                                                                                              | 55.5 | 54.5 | 47.0 | 46.9 | 41.4 | 41.7 | 36.1 | 34.9 | 36.7 | 33.1 | 32.9 | 33.0
|2003                                                                                                                              | 37.3 | 38.2 | 36.6 | 36.4 | 36.4 | 35.7 | 37.7 | 38.8 | 44.8 | 45.3 | 45.3 | 48.8
|2004                                                                                                                              | 58.9 | 65.1 | 52.4 | 51.8 | 51.2 | 55.8 | 50.6 | 52.0 | 51.7 | 53.3 | 55.4 | 57.8
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|2005                                                                                                                              | 47.4 | 48.2 | 43.8 | 47.9 | 46.2 | 40.8 | 40.9 | 38.2 | 40.1 | 40.3 | 42.7 | 43.5
|2006                                                                                                                              | 37.1 | 41.1 | 37.8 | 37.6 | 36.4 | 37.6 | 38.3 | 35.9 | 37.9 | 39.7 | 37.1 | 37.6
|2007                                                                                                                              | 36.3 | 35.8 | 34.0 | 35.0 | 32.8 | 32.4 | 26.5 | 26.4 | 24.4 | 28.9 | 29.7 | 30.4
|2008                                                                                                                              | 32.5 | 30.5 | 30.2 | 27.5 | 28.3 | 30.7 | 25.9 | 25.0 | 28.6 | 30.6 | 31.5 | 31.3
|2009                                                                                                                              | 32.5 | 34.6 | 31.8 | 30.4 | 29.8 | 28.5 | 25.9 | 23.5 | 24.4 | 27.1 | 28.8 | 28.4
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|2010                                                                                                                              | 28.6 | 28.5 | 25.4 | 26.7 | 21.9 | 22.5 | 21.3 | 21.4 | 22.8 | 24.5 | 29.0 | 27.8
|2011                                                                                                                              | 25.8 | 26.4 | 26.7 | 24.2 | 21.7 | 24.8 | 21.0 | 18.5 | 21.0 | 24.1 | 25.4 | 27.1
|2012                                                                                                                              | 23.4 | 23.5 | 23.4 | 21.7 | 21.1 | 18.0 | 17.7 | 17.8 | 21.1 | 20.3 | 20.8 | 24.5
|2013                                                                                                                              | 22.3 | 22.9 | 22.1 | 20.3 | 13.0 | 15.3 | 14.8 | 13.4 | 13.2 | 13.4 | 12.4 | 11.8
|2014                                                                                                                              | 12.6 | 12.7 | 12.3 | 11.8 | 12.8 | 12.8 | 13.0 | 12.7 | 12.2 | 11.9 | 13.6 | 14.5
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|2015                                                                                                                              | 15.3 | 16.2 | 15.6 | 16.2 | 16.5 | 16.4 | 16.5 | 17.0 | 16.5 | 16.5 | 14.0 | 13.7
|2016                                                                                                                              | 13.5 | 14.0 | 14.2 | 14.6 | 15.1 | 20.3 | 18.4 | 14.5 | 19.8 | 18.5 | 15.2 | 14.0
|2017                                                                                                                              | 13.7 | 14.4 | 14.0 | 15.2 | 14.7 | 12.8 | 14.2 | 12.0 | 14.3 | 13.0 | 14.2 | 13.5
|2018                                                                                                                              | 14.0 | 14.3 | 12.6 | 15.7 | 13.5 | 14.7 | 14.0 | 15.0 | 15.8 | 14.7 | 14.6 | 14.1
|2019                                                                                                                              | 15.2 | 16.2 | 15.7 | 17.7 | 18.3 | 20.1 | 20.4 | 20.6 | 20.9 | 18.1 | 17.7 | 19.9
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|2020                                                                                                                              | 19.7 | 20.9 | 20.3 | 23.9 | 28.7 | 19.1 | 17.4 | 18.4 | 19.0 | 18.7 | 20.0 | 19.5
|2021                                                                                                                              | 20.6 | 22.8 | 23.6 | 23.1 | 19.3 | 21.3 | 23.3 | 19.5 | 19.7 | 17.9 | 18.4 | 24.5
|2022                                                                                                                              | 14.2 | 17.9 | 18.3 | 18.9 | 20.3 | 19.2 | 23.5 | 22.7 | 21.9 | 21.0 | 20.5 | 23.2
|2023                                                                                                                              | 23.4 | 26.3 | 23.5 | 22.4 | 21.7 | 21.2 | 18.2 | 21.3 | 18.3 | 23.3 | 27.1 | NA  
|2024                                                                                                                              | 19.4 | 22.2 | 21.9 | 24.5 | 26.4 |      |      |      |      |      |      |     
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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: 7/31/2024                                                                                                          
|Next Release Date: 8/30/2024