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| Percent of Commercial Natural Gas Deliveries in Idaho Represented by the Price (Percent) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1989 | 88.9 | 90.2 | 90.6 | 89.0 | 82.8 | 85.9 | 86.8 | 83.0 | 84.1 | 79.3 | 84.6 | 87.4 |
| 1990 | 91.5 | 90.4 | 89.7 | 87.7 | 85.8 | 88.1 | 86.1 | 85.2 | 85.0 | 79.3 | 86.3 | 86.4 |
| 1991 | 91.0 | 91.7 | 88.5 | 87.4 | 87.4 | 86.8 | 84.7 | 84.0 | 82.9 | 73.6 | 85.1 | 87.5 |
| 1992 | 89.4 | 89.0 | 87.1 | 85.2 | 83.1 | 80.2 | 81.0 | 82.4 | 80.2 | 77.9 | 82.2 | 88.3 |
| 1993 | 89.4 | 89.9 | 91.0 | 87.9 | 87.4 | 82.3 | 82.8 | 81.3 | 79.2 | 77.7 | 81.5 | 87.8 |
| 1994 | 87.8 | 88.6 | 88.1 | 85.9 | 83.2 | 82.7 | 84.2 | 80.1 | 80.6 | 79.4 | 84.1 | 87.6 |
| 1995 | 89.7 | 89.1 | 86.5 | 85.5 | 86.0 | 85.3 | 83.7 | 82.5 | 80.4 | 77.1 | 85.9 | 85.5 |
| 1996 | 88.8 | 90.1 | 88.2 | 87.2 | 85.7 | 86.0 | 82.4 | 81.9 | 80.0 | 77.3 | 84.9 | 87.6 |
| 1997 | 87.8 | 89.7 | 87.7 | 86.1 | 86.4 | 83.3 | 83.1 | 82.8 | 82.5 | 76.4 | 83.1 | 86.9 |
| 1998 | 90.2 | 88.9 | 88.3 | 86.7 | 85.7 | 85.6 | 84.2 | 83.3 | 80.6 | 75.3 | 83.9 | 86.1 |
| 1999 | 89.4 | 88.7 | 87.7 | 86.9 | 85.4 | 83.2 | 83.6 | 81.9 | 80.3 | 78.9 | 82.4 | 85.8 |
| 2000 | 89.5 | 89.4 | 88.0 | 88.0 | 83.5 | 84.4 | 83.3 | 81.9 | 80.6 | 76.4 | 83.2 | 87.9 |
| 2001 | 89.1 | 90.5 | 88.8 | 85.5 | 86.1 | 82.6 | 79.0 | 79.3 | 81.7 | 76.3 | 83.3 | 86.6 |
| 2002 | 86.5 | 85.6 | 83.3 | 81.4 | 85.8 | 83.8 | 83.3 | 87.3 | 85.9 | 83.5 | 90.1 | 91.1 |
| 2003 | 87.8 | 87.5 | 88.2 | 85.7 | 85.3 | 82.4 | 80.1 | 78.3 | 77.9 | 74.0 | 82.4 | 87.9 |
| 2004 | 89.1 | 89.0 | 88.3 | 84.1 | 81.9 | 81.5 | 77.7 | 80.3 | 80.3 | 77.1 | 82.8 | 88.0 |
| 2005 | 88.4 | 89.0 | 86.9 | 86.7 | 82.6 | 81.8 | 81.1 | 78.0 | 80.4 | 76.8 | 81.6 | 88.1 |
| 2006 | 88.8 | 88.9 | 87.9 | 87.2 | 81.8 | 83.1 | 79.4 | 78.8 | 78.2 | 77.0 | 82.5 | 89.0 |
| 2007 | 88.2 | 90.1 | 87.3 | 84.1 | 78.3 | 76.8 | 74.9 | 71.7 | 74.4 | 81.0 | 84.6 | 87.5 |
| 2008 | 88.2 | 89.8 | 87.0 | 86.1 | 83.7 | 83.4 | 78.7 | 77.2 | 78.4 | 82.8 | 84.1 | 87.9 |
| 2009 | 88.4 | 86.8 | 84.8 | 81.2 | 76.7 | 74.2 | 73.0 | 73.4 | 75.5 | 79.8 | 84.4 | 87.4 |
| 2010 | 85.7 | 84.6 | 83.5 | 80.5 | 76.5 | 73.6 | 69.1 | 70.4 | 77.1 | 78.5 | 84.0 | 86.6 |
| 2011 | 86.5 | 86.5 | 83.2 | 79.6 | 72.3 | 72.0 | 67.4 | 68.3 | 74.3 | 75.0 | 84.0 | 83.2 |
| 2012 | 84.8 | 82.7 | 79.7 | 73.9 | 66.6 | 61.1 | 66.7 | 64.5 | 67.6 | 75.3 | 74.8 | 82.7 |
| 2013 | 85.7 | 82.0 | 78.6 | 74.3 | 62.4 | 61.8 | 57.7 | 57.6 | 66.6 | 72.7 | 79.5 | 84.8 |
| 2014 | 84.0 | 82.1 | 78.6 | 73.9 | 62.0 | 61.6 | 62.9 | 61.1 | 64.8 | 72.3 | 81.1 | 82.5 |
| 2015 | 82.6 | 79.7 | 76.1 | 72.9 | 62.6 | 58.0 | 56.7 | 58.4 | 64.2 | 66.8 | 78.9 | 83.4 |
| 2016 | 83.3 | 80.3 | 76.5 | 67.4 | 62.4 | 59.8 | 58.9 | 61.4 | 59.6 | 67.1 | 75.5 | 85.4 |
| 2017 | 87.0 | 82.5 | 76.9 | 74.2 | 62.1 | 58.7 | 54.3 | 63.0 | 64.2 | 72.7 | 77.5 | 84.7 |
| 2018 | 82.6 | 83.8 | 80.0 | 74.8 | 61.2 | 62.2 | 58.7 | 59.0 | 61.5 | 70.6 | 79.3 | 84.0 |
| 2019 | 83.3 | 84.4 | 80.9 | 72.0 | 65.1 | 57.8 | 58.1 | 58.9 | 62.4 | 78.7 | 78.2 | 82.7 |
| 2020 | 83.5 | 83.3 | 78.9 | 74.0 | 65.4 | 63.3 | 54.7 | 57.2 | 62.5 | 74.3 | 79.9 | 84.3 |
| 2021 | 82.9 | 83.8 | 80.3 | 73.4 | 66.8 | 56.5 | 58.5 | 56.8 | 63.3 | 74.4 | 78.9 | 83.4 |
| 2022 | 84.9 | 84.9 | 80.3 | 79.0 | 70.7 | 59.7 | 58.4 | 68.9 | 60.7 | 65.3 | 82.5 | 85.6 |
| 2023 | 84.9 | 84.7 | 83.7 | 78.7 | 66.0 | 60.4 | 58.5 | 55.4 | 55.0 | 76.5 | 77.6 | 83.3 |
| 2024 | 76.9 | 73.5 | 69.7 | 63.1 | 59.8 | 50.8 | 34.7 | 43.1 | 44.6 | 61.6 | 70.1 | 76.1 |
| 2025 | 74.5 | 73.1 | 65.4 | 58.6 | 47.3 | 39.7 | 40.4 | |||||
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 9/30/2025 |
| Next Release Date: 10/31/2025 |