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|View History: Monthly Download Data (XLS File)                                                         
|View History: Monthly                                                                                   
|View History: Monthly                                                                                   
|View History:                                                                                           
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|Iowa Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Percent)
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|Iowa 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  
|--------------------------------------------------------------------------------------------------------------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | -----
|1991                                                                                                                              | -3.6  | -8.4  | -6.6  | -4.0  | -3.7  | 4.9   | 4.5   | 4.9   | 13.7  | 21.6  | 15.1  | 18.2 
|1992                                                                                                                              | -5.9  | -10.5 | -11.0 | -8.6  | -1.7  | -4.7  | 3.2   | 7.9   | 6.2   | 3.3   | 2.5   | -4.3 
|1993                                                                                                                              | -73.0 | -85.1 | -88.4 | -81.1 | -72.8 | -64.5 | -56.2 | -50.3 | -43.2 | -42.8 | -44.2 | -51.6
|1994                                                                                                                              | 21.3  | 54.4  | 61.3  | 12.0  | -0.1  | -6.4  | -6.3  | -3.5  | -4.3  | 1.5   | 5.3   | 7.2  
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|1995                                                                                                                              | 3.0   | -5.8  | -21.7 | -39.9 | -37.4 | -20.3 | -14.5 | -2.2  | -1.7  | -4.5  | -14.9 | -14.6
|1996                                                                                                                              | -11.5 | 0.0   | -26.6 | -32.1 | -52.8 | -35.7 | -14.9 | -13.5 | -9.0  | -1.9  | 7.0   | 0.4  
|1997                                                                                                                              | 5.1   | 11.2  | 76.8  | 72.4  | 129.0 | 65.0  | 16.6  | 4.6   | 3.7   | -1.1  | 8.3   | 16.8 
|1998                                                                                                                              | 15.2  | 41.6  | 15.6  | 34.6  | 25.3  | 14.9  | 48.5  | 17.4  | 12.0  | 8.3   | 9.4   | 4.7  
|1999                                                                                                                              | 1.5   | -28.0 | -27.7 | -26.1 | -12.7 | -14.9 | -29.0 | -10.7 | -6.8  | -0.9  | -2.6  | -5.5 
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|2000                                                                                                                              | -12.4 | -20.4 | 11.8  | -8.5  | -7.0  | -9.6  | -5.7  | -3.3  | -3.0  | 2.0   | -13.0 | -27.1
|2001                                                                                                                              | -32.0 | -12.0 | -19.6 | -9.0  | 4.1   | 4.4   | 0.0   | 4.6   | 5.1   | 1.4   | 26.5  | 70.9 
|2002                                                                                                                              | 115.6 | 40.2  | -24.2 | -22.8 | -52.1 | -41.0 | -19.2 | -15.5 | -13.7 | -9.5  | -9.0  | -15.6
|2003                                                                                                                              | -26.8 | -22.9 | 27.9  | 38.5  | 85.1  | 47.1  | 15.7  | 11.3  | 13.1  | 10.8  | 1.9   | 8.8  
|2004                                                                                                                              | 20.3  | 29.5  | -26.4 | -31.0 | -15.9 | -8.9  | 1.8   | 4.0   | 1.3   | -0.1  | 7.7   | 6.6  
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|2005                                                                                                                              | 10.3  | 35.2  | 62.2  | 37.5  | -5.5  | -1.2  | -1.0  | -1.7  | 1.0   | 1.4   | -4.3  | -6.6 
|2006                                                                                                                              | -4.2  | -7.7  | 9.1   | 20.0  | 35.7  | 22.8  | 8.0   | 9.0   | 5.8   | 2.0   | 3.6   | 7.2  
|2007                                                                                                                              | 0.4   | -4.9  | -9.2  | 12.6  | 13.1  | 1.7   | -3.0  | -5.4  | -0.5  | 5.3   | 0.7   | -4.7 
|2008                                                                                                                              | 0.7   | 7.7   | 41.0  | 12.0  | -19.3 | -17.3 | -1.8  | 8.8   | 4.6   | 3.0   | 6.9   | 7.0  
|2009                                                                                                                              | 3.3   | 20.1  | 1.5   | 12.4  | 47.3  | 63.3  | 20.7  | 10.6  | 9.3   | 7.9   | 11.0  | 9.1  
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|2010                                                                                                                              | 17.0  | 12.6  | 17.3  | 11.9  | -12.9 | -20.5 | -16.7 | -14.8 | -8.1  | -0.9  | -6.6  | -4.5 
|2011                                                                                                                              | -7.2  | -1.3  | 1.4   | -0.7  | 3.2   | -6.5  | -6.8  | -5.5  | 0.3   | 1.5   | 3.4   | 8.2  
|2012                                                                                                                              | 20.1  | 24.2  | 46.2  | 43.1  | 33.9  | 13.5  | 2.2   | 0.8   | -1.2  | -6.0  | -13.3 | -18.8
|2013                                                                                                                              | -27.8 | -27.7 | -37.0 | -36.3 | -6.2  | 16.6  | 24.3  | 16.6  | 5.2   | -1.8  | -2.7  | -6.3 
|2014                                                                                                                              | -7.7  | -15.5 | -20.3 | -20.0 | -5.4  | 4.0   | 1.8   | 6.0   | 4.3   | 3.3   | 0.6   | 16.2 
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|2015                                                                                                                              | 44.2  | 68.3  | 102.6 | 120.7 | 54.5  | 32.8  | 5.8   | -2.5  | -2.6  | 1.1   | 9.0   | 9.3  
|2016                                                                                                                              | 0.2   | 1.9   | 10.2  | 2.7   | -9.5  | -20.0 | -20.3 | -13.7 | -7.4  | -0.3  | -1.0  | -11.0
|2017                                                                                                                              | -6.6  | 0.2   | -1.5  | 2.5   | -1.1  | -4.5  | -5.0  | -8.7  | -3.8  | -1.2  | -2.7  | -0.6 
|2018                                                                                                                              | -13.0 | -22.1 | -31.0 | -33.4 | -25.7 | -25.0 | -23.5 | -6.6  | -4.3  | -3.3  | -7.3  | -5.6 
|2019                                                                                                                              | -3.3  | 0.3   | 22.0  | 36.1  | 39.5  | 48.6  | 50.2  | 25.2  | 13.6  | 3.6   | 0.9   | 2.2  
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|2020                                                                                                                              | 16.8  | 23.3  | 12.8  | 9.7   | 11.8  | 16.3  | 11.9  | 2.8   | -2.9  | -4.5  | 17.2  | 19.1 
|2021                                                                                                                              | 10.6  | 0.8   | -2.6  | -6.8  | -14.9 | -15.9 | -14.6 | -10.9 | -5.7  | -0.6  | 1.5   | 6.6  
|2022                                                                                                                              | 7.0   | 8.8   | 9.1   | 5.8   | -3.9  | -8.2  | -4.4  | -4.8  | -2.1  | -0.1  | -0.9  | -5.9 
|2023                                                                                                                              | -5.0  | -1.9  | -3.4  | 0.9   | 8.0   | 10.6  | 1.6   | 2.3   | 1.2   | -1.8  | -0.3  | 3.3  
|2024                                                                                                                              | 3.7   | 0.3   | 0.5   | -0.4  | -1.7  |       |       |       |       |       |       |      
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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