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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 Commercial Natural Gas Deliveries in South Dakota Represented by the Price  (Percent)
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|Percent of Commercial Natural Gas Deliveries in South Dakota Represented by the Price  (Percent)
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|Year                                                                                                                              | Jan  | Feb  | Mar  | Apr  | May  | Jun  | Jul  | Aug  | Sep  | Oct  | Nov  | Dec 
|--------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ----
|1989                                                                                                                              | 92.8 | 93.1 | 92.8 | 92.1 | 92.5 | 91.6 | 90.2 | 89.4 | 90.0 | 89.6 | 91.1 | 92.0
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|1990                                                                                                                              | 90.7 | 90.1 | 90.2 | 88.0 | 78.4 | 83.0 | 81.9 | 82.4 | 82.0 | 77.7 | 82.0 | 86.3
|1991                                                                                                                              | 84.8 | 83.0 | 80.5 | 83.4 | 79.5 | 74.9 | 74.3 | 74.3 | 74.5 | 76.7 | 83.4 | 85.2
|1992                                                                                                                              | 87.0 | 83.3 | 85.6 | 83.1 | 80.7 | 73.5 | 72.3 | 74.6 | 78.0 | 76.5 | 81.8 | 84.7
|1993                                                                                                                              | 86.5 | 83.9 | 84.4 | 81.2 | 76.4 | 73.3 | 74.9 | 72.9 | 75.8 | 78.7 | 90.0 | 91.2
|1994                                                                                                                              | 92.9 | 92.3 | 92.6 | 88.4 | 84.7 | 74.7 | 72.7 | 82.0 | 79.0 | 83.4 | 88.4 | 92.1
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|1995                                                                                                                              | 92.1 | 90.8 | 89.7 | 87.2 | 82.8 | 77.1 | 76.5 | 75.5 | 75.8 | 82.3 | 85.8 | 88.5
|1996                                                                                                                              | 89.8 | 87.9 | 84.7 | 85.0 | 78.7 | 74.5 | 67.1 | 66.9 | 69.4 | 72.9 | 80.6 | 82.8
|1997                                                                                                                              | 86.9 | 85.7 | 86.3 | 85.7 | 80.7 | 83.7 | 78.3 | 72.1 | 59.9 | 68.3 | 84.0 | 86.1
|1998                                                                                                                              | 86.6 | 85.7 | 85.7 | 93.7 | 66.0 | 73.0 | 75.5 | 74.9 | 73.7 | 95.8 | 84.5 | 84.6
|1999                                                                                                                              | 86.5 | 84.1 | 84.2 | 83.2 | 78.7 | 60.1 | 73.9 | 69.7 | 71.5 | 75.6 | 80.3 | 83.4
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|2000                                                                                                                              | 86.0 | 85.4 | 70.0 | 95.9 | 80.2 | 74.8 | 74.0 | 78.8 | 72.2 | 80.8 | 83.2 | 89.6
|2001                                                                                                                              | 88.3 | 85.0 | 86.7 | 84.1 | 83.9 | 78.2 | 75.7 | 75.3 | 75.5 | 80.2 | 82.0 | 85.9
|2002                                                                                                                              | 85.3 | 85.3 | 89.3 | 85.3 | 80.0 | 74.0 | 68.7 | 73.1 | 69.9 | 84.0 | 79.7 | 83.9
|2003                                                                                                                              | 86.6 | 83.4 | 85.9 | 80.5 | 81.8 | 76.6 | 72.4 | 67.4 | 72.4 | 76.4 | 84.6 | 82.5
|2004                                                                                                                              | 87.0 | 85.0 | 81.1 | 80.4 | 70.8 | 74.3 | 66.7 | 71.3 | 67.6 | 83.9 | 83.3 | 88.2
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|2005                                                                                                                              | 88.8 | 85.5 | 87.4 | 77.3 | 85.3 | 72.8 | 74.1 | 76.3 | 69.8 | 81.9 | 80.3 | 86.1
|2006                                                                                                                              | 84.8 | 86.2 | 83.3 | 76.4 | 83.9 | 74.6 | 74.2 | 70.0 | 75.9 | 77.1 | 83.9 | 85.5
|2007                                                                                                                              | 84.7 | 86.5 | 83.7 | 81.1 | 72.7 | 67.4 | 65.7 | 64.3 | 67.4 | 77.8 | 80.6 | 84.8
|2008                                                                                                                              | 85.6 | 86.2 | 83.8 | 81.4 | 81.4 | 73.3 | 69.6 | 68.2 | 76.3 | 74.4 | 84.0 | 87.7
|2009                                                                                                                              | 85.8 | 85.1 | 84.3 | 83.1 | 79.8 | 76.5 | 73.8 | 66.7 | 69.3 | 80.6 | 76.8 | 85.9
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|2010                                                                                                                              | 85.4 | 83.3 | 81.3 | 78.5 | 76.4 | 70.3 | 69.9 | 66.2 | 69.9 | 74.0 | 82.1 | 85.4
|2011                                                                                                                              | 85.6 | 85.4 | 84.3 | 82.9 | 77.8 | 72.0 | 70.7 | 66.2 | 71.7 | 73.2 | 81.7 | 83.9
|2012                                                                                                                              | 85.4 | 85.0 | 83.3 | 80.4 | 72.3 | 72.8 | 69.6 | 70.7 | 74.2 | 76.7 | 81.8 | 85.7
|2013                                                                                                                              | 84.4 | 84.1 | 83.0 | 82.6 | 79.2 | 74.5 | 70.4 | 70.9 | 70.0 | 77.8 | 82.0 | 83.8
|2014                                                                                                                              | 84.2 | 83.8 | 84.2 | 82.0 | 78.8 | 73.2 | 71.8 | 71.6 | 72.3 | 73.3 | 82.7 | 83.4
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|2015                                                                                                                              | 84.8 | 83.7 | 82.5 | 79.3 | 77.3 | 71.2 | 70.7 | 69.3 | 68.6 | 75.0 | 80.3 | 82.6
|2016                                                                                                                              | 84.4 | 82.3 | 80.5 | 80.5 | 77.0 | 72.3 | 73.0 | 69.1 | 72.1 | 76.4 | 80.8 | 83.3
|2017                                                                                                                              | 85.0 | 83.6 | 82.8 | 79.4 | 77.8 | 71.0 | 73.1 | 68.0 | 71.2 | 77.2 | 81.3 | 83.2
|2018                                                                                                                              | 84.1 | 83.7 | 84.4 | 83.2 | 83.3 | 75.9 | 71.8 | 69.0 | 70.2 | 75.7 | 77.6 | 81.8
|2019                                                                                                                              | 81.5 | 81.6 | 83.0 | 82.1 | 78.6 | 75.9 | 68.6 | 67.3 | 67.5 | 73.3 | 79.1 | 81.3
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|2020                                                                                                                              | 82.0 | 80.7 | 82.8 | 81.8 | 75.5 | 70.4 | 64.9 | 63.6 | 65.2 | 69.8 | 77.2 | 79.4
|2021                                                                                                                              | 80.1 | 80.6 | 82.9 | 78.8 | 77.8 | 69.3 | 65.4 | 60.0 | 61.4 | 66.3 | 73.2 | 75.6
|2022                                                                                                                              | 80.8 | 77.4 | 80.0 | 78.1 | 76.8 | 72.7 | 62.2 | 58.3 | 57.9 | 64.7 | 68.8 | 78.8
|2023                                                                                                                              | 79.2 | 76.9 | 79.5 | 80.8 | 77.8 | 69.0 | 65.9 | 60.2 | 64.4 | 66.8 | 75.6 | 79.0
|2024                                                                                                                              | 80.8 | 81.8 | 79.3 |      |      |      |      |      |      |      |      |     
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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: 5/31/2024                                                                                                          
|Next Release Date: 6/28/2024