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| Montana Residual Fuel Oil Sulfur Greater Than 1% Retail Sales by All Sellers (Dollars per Gallon) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1983 | W | W | W | W | W | W | W | 0.536 | W | W | 0.553 | 0.677 |
| 1984 | 0.721 | W | W | W | W | W | W | W | W | W | W | W |
| 1985 | W | W | W | 0.383 | W | W | W | W | W | W | W | 0.400 |
| 1986 | 0.369 | W | W | W | W | W | 0.417 | W | W | W | W | W |
| 1987 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1988 | 0.343 | 0.319 | W | W | W | W | W | W | W | W | W | 0.306 |
| 1989 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1990 | 0.531 | W | W | 0.375 | W | 0.385 | W | W | W | W | W | W |
| 1991 | W | W | W | W | - | W | - | - | W | W | - | W |
| 1992 | W | W | W | NA | W | W | - | - | - | W | W | W |
| 1993 | W | W | W | - | W | - | W | W | W | W | W | W |
| 1994 | W | W | W | W | - | W | - | NA | W | NA | NA | W |
| 1995 | W | NA | NA | W | NA | W | NA | W | NA | W | NA | W |
| 1996 | W | W | W | NA | NA | W | W | - | W | W | - | W |
| 1997 | - | W | W | W | W | W | W | W | W | NA | - | W |
| 1998 | W | - | W | W | W | W | W | W | W | W | NA | - |
| 1999 | W | W | W | W | W | W | W | W | W | W | - | W |
| 2000 | W | W | W | W | W | W | W | W | W | - | W | - |
| 2001 | - | - | - | - | W | W | W | - | W | - | - | - |
| 2002 | - | - | - | W | W | W | W | W | W | - | - | W |
| 2003 | W | - | - | W | W | W | W | W | W | - | - | - |
| 2004 | - | - | W | W | W | - | W | W | - | - | W | - |
| 2005 | - | - | - | W | W | W | W | W | - | - | - | - |
| 2006 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2007 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2008 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2009 | - | - | - | - | - | W | W | W | - | - | - | - |
| 2010 | - | - | - | - | - | - | W | W | - | - | - | - |
| 2011 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2012 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2013 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2014 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2015 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2016 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2017 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2018 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2019 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2020 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2021 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2022 | - | - | - | |||||||||
| - = 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 |