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|View History: Monthly Download Data (XLS File)                                                             
|View History: Monthly                                                                                       
|View History: Monthly                                                                                       
|View History:                                                                                               
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|Michigan Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Percent)
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|Michigan 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                                                                                                                              | 12.0  | 12.8  | 14.6  | 30.2  | 17.0  | 11.7  | 5.0   | -0.7  | -6.8  | -2.6  | -11.4 | -14.2
|1992                                                                                                                              | -8.1  | -14.1 | -31.6 | -37.7 | -28.9 | -21.6 | -14.9 | -8.9  | 1.2   | -1.2  | 1.1   | -2.0 
|1993                                                                                                                              | -7.5  | -20.7 | -25.8 | -17.2 | -1.0  | 3.7   | 5.2   | 7.6   | 6.1   | 6.7   | 6.2   | 7.4  
|1994                                                                                                                              | -4.8  | -0.4  | 22.1  | 37.4  | 24.6  | 15.8  | 10.2  | 7.2   | 6.2   | 5.4   | 12.3  | 21.2 
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|1995                                                                                                                              | 45.7  | 54.3  | 51.8  | 20.6  | 8.0   | 3.8   | 3.1   | -2.0  | -4.1  | -3.7  | -11.8 | -24.0
|1996                                                                                                                              | -36.3 | -39.8 | -47.6 | -41.4 | -32.3 | -22.7 | -17.5 | -9.7  | -4.1  | -0.9  | -0.2  | 9.0  
|1997                                                                                                                              | 16.9  | 31.2  | 41.0  | 40.5  | 23.5  | 15.4  | 11.0  | 6.8   | 3.1   | 0.2   | 1.9   | 3.7  
|1998                                                                                                                              | 17.4  | 33.0  | 41.3  | 43.7  | 44.2  | 36.0  | 22.0  | 14.2  | 6.0   | 4.5   | 11.4  | 17.1 
|1999                                                                                                                              | 13.2  | 11.6  | -3.0  | -5.2  | -8.3  | -12.0 | -10.3 | -8.2  | -4.2  | -4.4  | 4.1   | -4.6 
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|2000                                                                                                                              | -15.1 | -23.7 | -11.0 | -15.8 | -15.1 | -16.1 | -14.5 | -13.9 | -13.2 | -10.6 | -24.1 | -35.4
|2001                                                                                                                              | -25.7 | -42.7 | -50.5 | -37.9 | -24.2 | -12.5 | -4.8  | 1.9   | 7.1   | 8.2   | 22.7  | 55.2 
|2002                                                                                                                              | 82.1  | 122.5 | 141.0 | 96.2  | 48.7  | 31.2  | 19.0  | 9.8   | 3.8   | -3.0  | -12.5 | -20.8
|2003                                                                                                                              | -43.7 | -68.7 | -73.9 | -68.9 | -51.7 | -36.6 | -22.5 | -16.4 | -10.3 | -2.0  | 3.1   | 8.2  
|2004                                                                                                                              | 13.5  | 54.6  | 96.1  | 99.9  | 53.8  | 28.8  | 16.7  | 16.3  | 13.1  | 10.0  | 12.2  | 14.1 
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|2005                                                                                                                              | 30.1  | 55.6  | 53.2  | 42.6  | 30.1  | 19.0  | 9.4   | 1.6   | -0.9  | -1.4  | -2.1  | -8.4 
|2006                                                                                                                              | 13.3  | 16.8  | 33.7  | 33.0  | 29.2  | 26.9  | 19.3  | 13.6  | 10.9  | 5.2   | 6.7   | 22.6 
|2007                                                                                                                              | 13.3  | -6.9  | -2.6  | -10.5 | -7.6  | -5.1  | 0.7   | 1.8   | 0.8   | 4.6   | 0.3   | -8.9 
|2008                                                                                                                              | -18.5 | -16.3 | -28.9 | -17.1 | -14.4 | -11.6 | -7.5  | -1.1  | 0.3   | -0.8  | -1.3  | -6.2 
|2009                                                                                                                              | -12.6 | 0.3   | 17.7  | 11.6  | 10.2  | 9.1   | 7.1   | 4.0   | 3.6   | 3.0   | 8.4   | 14.6 
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|2010                                                                                                                              | 19.3  | 18.2  | 25.3  | 27.4  | 14.5  | 6.2   | -2.0  | -4.9  | -3.6  | -0.4  | -4.0  | -7.8 
|2011                                                                                                                              | -5.5  | -9.5  | -19.6 | -24.2 | -18.3 | -13.7 | -8.9  | -3.9  | -1.7  | -0.6  | 1.7   | 14.5 
|2012                                                                                                                              | 29.2  | 50.2  | 73.6  | 65.4  | 47.7  | 32.6  | 21.4  | 14.1  | 8.1   | 1.6   | -2.4  | -2.6 
|2013                                                                                                                              | -9.5  | -19.8 | -40.8 | -43.5 | -35.6 | -26.8 | -19.2 | -13.9 | -9.7  | -6.9  | -9.8  | -25.5
|2014                                                                                                                              | -44.7 | -66.8 | -76.0 | -63.9 | -41.4 | -26.2 | -14.6 | -7.6  | -4.3  | -1.6  | -1.3  | 20.3 
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|2015                                                                                                                              | 49.4  | 64.8  | 107.0 | 82.2  | 35.2  | 17.2  | 6.7   | 4.7   | 3.3   | 5.4   | 14.7  | 19.4 
|2016                                                                                                                              | 35.7  | 125.1 | 217.5 | 140.4 | 85.7  | 54.6  | 34.6  | 17.4  | 11.5  | 5.3   | 3.2   | -9.8 
|2017                                                                                                                              | -12.1 | -6.2  | -15.8 | -8.4  | -9.5  | -7.5  | -6.5  | -3.0  | -3.1  | -1.9  | -5.5  | -9.0 
|2018                                                                                                                              | -23.8 | -42.9 | -56.3 | -65.2 | -51.9 | -41.4 | -30.7 | -24.1 | -19.9 | -15.7 | -17.5 | -9.0 
|2019                                                                                                                              | -6.5  | -13.5 | -10.9 | 35.1  | 29.0  | 27.5  | 22.8  | 19.4  | 21.1  | 18.2  | 17.7  | 16.8 
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|2020                                                                                                                              | 41.3  | 77.9  | 149.7 | 110.8 | 69.6  | 43.8  | 27.2  | 17.6  | 8.9   | 1.2   | 8.9   | 4.2  
|2021                                                                                                                              | -2.4  | -20.1 | -20.2 | -17.8 | -17.8 | -17.1 | -13.7 | -12.1 | -9.0  | -3.5  | -11.2 | -7.1 
|2022                                                                                                                              | -24.2 | -26.2 | -35.2 | -35.8 | -25.0 | -17.1 | -14.7 | -10.3 | -6.8  | -4.2  | 1.3   | -7.2 
|2023                                                                                                                              | 19.5  | 58.9  | 63.8  | 74.1  | 51.2  | 37.0  | 29.6  | 19.7  | 12.7  | 8.0   | 7.1   | 21.8 
|2024                                                                                                                              | 10.6  | 18.4  | 31.9  | 24.6  | 19.0  |       |       |       |       |       |       |      
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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