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| Rocky Mountain (PADD 4) 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 | 0.558 | 0.529 | 0.519 | 0.528 | 0.509 | 0.536 | 0.560 | 0.526 | 0.519 | 0.535 | 0.545 | 0.579 |
| 1984 | 0.625 | 0.595 | 0.573 | 0.572 | 0.604 | 0.615 | 0.588 | 0.594 | 0.567 | 0.581 | 0.582 | 0.612 |
| 1985 | 0.602 | 0.595 | 0.588 | 0.460 | 0.506 | 0.492 | 0.530 | 0.485 | 0.498 | 0.503 | 0.500 | 0.478 |
| 1986 | 0.414 | 0.354 | 0.357 | 0.405 | 0.337 | 0.347 | 0.300 | 0.239 | 0.227 | 0.251 | 0.308 | 0.399 |
| 1987 | 0.294 | 0.293 | 0.300 | 0.242 | 0.241 | 0.265 | 0.288 | 0.342 | 0.394 | 0.343 | 0.332 | 0.315 |
| 1988 | 0.304 | 0.303 | 0.306 | 0.302 | 0.285 | 0.272 | 0.270 | 0.257 | 0.226 | 0.249 | 0.222 | 0.251 |
| 1989 | 0.231 | 0.217 | 0.218 | 0.241 | 0.229 | 0.300 | 0.286 | 0.270 | 0.258 | 0.200 | 0.251 | 0.237 |
| 1990 | 0.396 | 0.393 | 0.327 | 0.335 | 0.295 | 0.301 | 0.309 | 0.305 | 0.292 | 0.340 | W | W |
| 1991 | W | 0.383 | W | W | 0.308 | 0.300 | W | W | 0.307 | 0.268 | W | W |
| 1992 | W | W | 0.270 | W | 0.272 | 0.274 | 0.249 | 0.249 | 0.273 | NA | W | 0.261 |
| 1993 | 0.272 | 0.291 | 0.298 | 0.288 | 0.291 | 0.283 | 0.275 | 0.299 | 0.278 | 0.289 | 0.312 | 0.304 |
| 1994 | 0.309 | 0.274 | 0.277 | 0.293 | 0.292 | W | 0.318 | 0.321 | 0.265 | 0.260 | 0.283 | 0.342 |
| 1995 | 0.309 | 0.338 | NA | NA | 0.341 | 0.334 | 0.322 | 0.305 | 0.313 | 0.328 | 0.319 | 0.328 |
| 1996 | 0.216 | 0.215 | 0.204 | 0.204 | 0.247 | 0.266 | 0.308 | 0.281 | 0.253 | 0.227 | 0.236 | 0.270 |
| 1997 | W | 0.319 | 0.331 | 0.325 | 0.285 | 0.277 | 0.289 | 0.289 | 0.290 | 0.282 | W | W |
| 1998 | W | W | W | 0.258 | W | W | W | W | W | W | W | W |
| 1999 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2000 | W | W | 0.290 | 0.284 | 0.285 | 0.381 | 0.408 | W | 0.465 | W | W | W |
| 2001 | W | W | W | W | 0.472 | 0.451 | 0.392 | W | W | 0.298 | W | W |
| 2002 | W | W | W | 0.309 | NA | 0.396 | NA | 0.389 | 0.376 | 0.412 | W | W |
| 2003 | W | 0.529 | W | W | W | W | W | 0.534 | 0.475 | W | W | W |
| 2004 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2005 | NA | NA | W | W | W | W | W | W | W | - | - | - |
| 2006 | - | - | - | - | - | - | - | - | - | - | - | W |
| 2007 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2008 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2009 | W | W | W | W | - | W | W | W | - | - | W | W |
| 2010 | W | - | - | - | - | - | 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 |