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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 Iowa Represented by the Price  (Percent)
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|Percent of Industrial Natural Gas Deliveries in Iowa Represented by the Price  (Percent)
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|Year                                                                                                                              | Jan  | Feb  | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct  | Nov  | Dec 
|--------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | --- | --- | --- | --- | --- | --- | --- | ---- | ---- | ----
|2001                                                                                                                              | 9.5  | 10.3 | 7.4 | 5.5 | 6.3 | 3.3 | 6.0 | 4.5 | 5.4 | 7.8  | 10.9 | 9.9 
|2002                                                                                                                              | 8.5  | 5.3  | 8.3 | 6.1 | 4.9 | 5.4 | 5.4 | 5.2 | 5.6 | 10.4 | 12.8 | 10.2
|2003                                                                                                                              | 10.3 | 8.9  | 9.3 | 6.7 | 5.2 | 6.0 | 5.5 | 5.6 | 6.3 | 8.8  | 10.6 | 9.1 
|2004                                                                                                                              | 10.4 | 8.9  | 8.8 | 5.7 | 4.9 | 5.3 | 4.0 | 4.8 | 5.1 | 8.4  | 16.2 | 12.9
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|2005                                                                                                                              | 11.8 | 9.6  | 9.8 | 7.7 | 7.8 | 8.0 | 8.8 | 8.3 | 9.1 | 11.5 | 12.5 | 10.7
|2006                                                                                                                              | 10.3 | 9.5  | 9.6 | 6.1 | 7.4 | 6.4 | 5.7 | 6.7 | 7.1 | 9.4  | 11.9 | 10.2
|2007                                                                                                                              | 8.9  | 8.1  | 6.4 | 6.1 | 5.8 | 5.2 | 4.2 | 5.0 | 5.8 | 6.6  | 7.0  | 7.5 
|2008                                                                                                                              | 7.9  | 6.5  | 5.8 | 5.0 | 6.0 | 5.0 | 4.6 | 5.0 | 5.1 | 7.2  | 9.1  | 10.2
|2009                                                                                                                              | 6.9  | 7.2  | 6.4 | 4.7 | 4.3 | 4.6 | 4.5 | 4.4 | 4.3 | 7.3  | 9.4  | 10.2
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|2010                                                                                                                              | 9.3  | 7.6  | 5.7 | 4.9 | 4.2 | 4.3 | 4.4 | 5.5 | 5.6 | 5.0  | 5.5  | 6.5 
|2011                                                                                                                              | 6.5  | 6.5  | 5.5 | 5.3 | 4.6 | 5.1 | 4.2 | 4.4 | 5.9 | 5.6  | 6.2  | 5.8 
|2012                                                                                                                              | 5.6  | 5.7  | 4.7 | 3.8 | 3.8 | 4.3 | 4.0 | 5.0 | 6.0 | 6.4  | 5.7  | 6.3 
|2013                                                                                                                              | 5.3  | 5.9  | 5.3 | 5.1 | 4.0 | 4.2 | 4.2 | 4.6 | 5.1 | 5.7  | 9.9  | 6.8 
|2014                                                                                                                              | 4.6  | 4.9  | 4.6 | 3.0 | 3.5 | 3.6 | 2.6 | 2.0 | 3.5 | 4.1  | 7.4  | 5.1 
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|2015                                                                                                                              | 4.3  | 5.7  | 3.2 | 3.4 | 2.5 | 1.9 | 2.2 | 1.7 | 2.4 | 4.7  | 5.7  | 3.8 
|2016                                                                                                                              | 4.0  | 4.2  | 4.0 | 3.2 | 3.3 | 2.3 | 2.0 | 2.3 | 2.8 | 4.0  | 5.4  | 3.9 
|2017                                                                                                                              | 3.9  | 3.0  | 3.3 | 2.1 | 1.7 | 1.6 | 1.9 | 1.7 | 2.3 | 2.9  | 5.4  | 4.9 
|2018                                                                                                                              | 2.8  | 3.4  | 2.9 | 2.2 | 2.3 | 1.9 | 2.1 | 2.0 | 1.8 | 2.7  | 3.7  | 3.6 
|2019                                                                                                                              | 3.6  | 4.4  | 3.6 | 2.6 | 2.4 | 1.9 | 2.8 | 2.4 | 2.0 | 3.5  | 6.2  | 4.9 
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|2020                                                                                                                              | 2.8  | 3.7  | 2.9 | 2.4 | 1.9 | 2.6 | 2.2 | 1.9 | 2.5 | 3.0  | 3.1  | 3.6 
|2021                                                                                                                              | 3.4  | 4.1  | 3.2 | 2.3 | 2.5 | 1.8 | 2.2 | 2.1 | 2.4 | 2.9  | 4.0  | 3.1 
|2022                                                                                                                              | 4.0  | 4.1  | 2.8 | 2.4 | 2.0 | 2.0 | 1.9 | 1.7 | 2.1 | 2.7  | 3.4  | 2.8 
|2023                                                                                                                              | 2.6  | 3.2  | 2.7 | 2.2 | 2.1 | 2.2 | 1.8 | 1.9 | 1.8 | 2.8  | 3.1  | 2.8 
|2024                                                                                                                              | 3.2  | 2.9  | 2.7 | 2.2 | 2.0 |     |     |     |     |      |      |     
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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