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|View History: Monthly Download Data (XLS File)                                                           
|View History: Monthly                                                                                     
|View History: Monthly                                                                                     
|View History:                                                                                             
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|Alaska Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Percent)
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|Alaska Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Percent)
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|Year                                                                                                                              | Jan   | Feb   | Mar   | Apr   | May   | Jun   | Jul   | Aug   | Sep   | Oct   | Nov   | Dec  
|--------------------------------------------------------------------------------------------------------------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | -----
|2013                                                                                                                              | NA    | NA    | NA    | NA    | NA    | NA    | NA    | NA    | NA    | NA    | NA    | NA   
|2014                                                                                                                              | 123.8 | 41.4  | 49.7  | 42.7  | 35.5  | 37.5  | 31.7  | 25.2  | 16.5  | 7.1   | 14.3  | 26.1 
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|2015                                                                                                                              | 23.8  | 25.2  | 18.6  | 18.4  | 17.3  | 9.5   | 9.0   | 5.9   | 3.0   | 3.7   | 0.8   | -2.7 
|2016                                                                                                                              | -2.1  | 0.7   | 3.5   | 10.2  | 18.0  | 23.6  | 30.8  | 38.3  | 44.9  | 43.4  | 40.6  | 34.1 
|2017                                                                                                                              | 25.1  | 16.9  | 8.6   | 6.8   | 4.8   | 6.7   | 7.7   | 8.6   | 8.7   | 10.9  | 9.0   | 11.0 
|2018                                                                                                                              | 10.7  | 9.2   | 11.7  | 7.4   | 4.8   | 3.4   | 1.5   | -0.4  | -0.6  | 0.1   | 3.0   | 2.5  
|2019                                                                                                                              | 1.1   | -1.3  | -2.2  | -1.6  | -0.4  | -1.1  | -2.0  | -3.2  | -4.9  | -7.2  | -9.2  | -12.0
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|2020                                                                                                                              | -17.2 | -17.7 | -21.9 | -23.7 | -23.3 | -22.8 | -21.1 | -17.5 | -14.6 | -13.6 | -14.7 | -13.3
|2021                                                                                                                              | -5.1  | -3.7  | -0.6  | 1.3   | 3.3   | 5.5   | 4.3   | 0.2   | -2.7  | -3.2  | -6.2  | -10.2
|2022                                                                                                                              | -14.5 | -13.5 | -11.3 | -10.4 | -9.1  | -6.1  | -3.0  | 0.9   | 5.7   | 7.1   | 11.9  | 16.1 
|2023                                                                                                                              | 25.6  | 28.4  | 29.4  | 29.0  | 24.2  | 19.1  | 16.2  | 13.0  | 8.2   | 5.7   | 3.9   | 1.5  
|2024                                                                                                                              | -5.6  | -8.2  | -9.5  | -9.8  | -11.3 |       |       |       |       |       |       |      
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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