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| Montana Premium Gasoline Through Company Outlets Price by Refiners (Dollars per Gallon) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1983 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1984 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1985 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1986 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1987 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1988 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1989 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1990 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1991 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1992 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1993 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1994 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1995 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1996 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1997 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1998 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1999 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2000 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2001 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2002 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2003 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2004 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2005 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2006 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2007 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2008 | W | W | W | 3.091 | 3.379 | 3.697 | NA | NA | NA | 2.771 | 1.799 | 1.242 |
| 2009 | 1.275 | 1.570 | 1.649 | 1.799 | NA | 2.288 | 2.354 | 2.433 | 2.455 | 2.317 | 2.381 | 2.326 |
| 2010 | 2.424 | 2.452 | 2.690 | NA | NA | 2.634 | W | W | W | W | W | W |
| 2011 | W | W | W | W | W | W | NA | W | NA | W | W | NA |
| 2012 | W | W | W | W | W | NA | W | W | W | W | W | W |
| 2013 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2014 | W | W | W | W | NA | W | W | W | W | W | W | W |
| 2015 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2016 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2017 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2018 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2019 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2020 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2021 | W | W | W | W | W | W | W | NA | W | W | W | W |
| 2022 | W | W | W | |||||||||
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 6/1/2022 |
| Next Release Date: TBD |