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Rocky Mountains (PADD 4) Percent Utilization of Refinery Operable Capacity (Percent)
Rocky Mountains (PADD 4) Percent Utilization of Refinery Operable Capacity (Percent)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1985 75.0 70.8 72.1 60.7 84.1 83.8 82.0 85.8 81.0 80.3 78.4 77.0
  1986 77.5 70.6 71.3 79.7 85.6 88.9 88.5 87.4 83.2 80.0 80.7 79.0
  1987 78.3 78.4 67.5 80.1 81.0 85.0 89.1 90.0 86.0 81.8 82.1 81.0
  1988 78.9 78.5 76.8 80.8 90.6 92.8 92.4 94.8 87.5 78.0 82.9 82.4
  1989 79.1 75.3 75.6 74.6 86.6 89.7 89.0 91.1 90.1 81.0 84.6 83.9
  1990 80.2 80.5 77.1 78.7 89.0 89.5 90.2 92.2 88.7 79.2 78.9 77.5
  1991 73.5 78.5 83.3 79.0 86.3 89.6 90.0 91.8 84.1 87.6 84.6 78.5
  1992 81.8 79.7 88.2 81.2 85.7 87.0 93.5 89.6 90.7 88.0 85.9 85.8
  1993 80.8 79.3 85.8 77.9 88.9 92.5 91.1 91.6 93.0 87.8 91.7 88.2
  1994 89.5 88.5 82.2 85.6 93.4 96.5 95.0 93.5 95.4 91.4 91.1 91.1
  1995 92.6 88.0 88.8 85.2 94.9 98.6 96.9 94.8 89.6 84.4 93.5 85.8
  1996 86.9 84.5 89.3 91.2 91.2 97.0 96.6 96.8 97.4 93.1 92.3 88.7
  1997 90.3 89.1 86.0 82.2 93.4 97.5 98.7 98.8 97.7 95.4 91.4 94.7
  1998 92.8 92.7 82.7 86.6 89.2 98.9 95.1 98.8 97.8 95.4 92.2 90.6
  1999 91.4 95.2 87.9 85.5 95.9 99.5 101.6 102.6 101.4 98.5 95.1 93.5
  2000 93.5 91.5 87.2 88.3 95.5 99.8 101.0 100.6 96.6 97.0 94.0 91.5
  2001 89.3 89.4 81.4 85.3 87.5 96.9 95.0 95.4 96.1 90.1 92.3 89.2
  2002 88.3 90.7 84.9 86.1 89.2 96.7 94.7 98.1 96.6 93.0 91.2 89.4
  2003 91.3 91.0 88.0 81.9 79.0 97.3 97.2 98.1 97.7 93.8 94.0 93.0
  2004 89.2 86.9 93.3 86.7 101.9 98.6 101.1 100.6 99.9 98.2 95.4 96.2
  2005 93.2 91.5 90.9 91.4 99.1 98.4 99.1 99.6 98.9 98.7 92.2 92.7
  2006 96.0 86.3 80.6 92.5 97.2 98.1 99.1 98.8 96.0 90.7 97.4 89.0
  2007 91.2 92.7 90.0 87.4 86.6 96.4 99.1 93.3 90.9 87.6 90.8 89.8
  2008 89.1 89.7 87.7 90.2 93.7 89.9 86.2 90.3 90.6 89.3 89.7 85.9
  2009 87.5 89.9 83.1 81.0 89.9 92.8 92.0 92.2 90.6 86.8 88.2 77.2
  2010 84.1 84.2 78.5 86.7 84.6 92.0 91.9 87.3 95.8 86.2 88.1 85.0
  2011 84.4 88.9 85.9 79.3 90.1 92.9 88.0 88.8 81.1 89.5 90.9 90.5
  2012 91.7 93.4 92.0 84.6 86.5 98.2 97.4 96.4 90.4 84.3 91.4 96.6
  2013 92.1 91.3 91.7 89.2 86.0 91.8 93.2 98.8 93.5 91.6 95.4 90.2
  2014 89.9 80.5 88.2 87.8 92.8 87.5 88.2 99.0 96.7 86.5 94.5 93.7
  2015 88.8 95.2 86.6 92.4 92.2 94.1 95.1 93.8 91.9 92.4 92.4 92.0
  2016 84.4 85.0 85.4 75.1 83.6 93.6 91.1 88.1 92.7 84.1 90.1 86.8
  2017 88.6 85.4 87.4 92.9 88.4 87.8 93.9 94.4 96.6 89.8 83.9 85.3
  2018 91.9 95.2 89.8 83.5 85.5 94.4 93.6 88.6 96.1 92.7 85.0 89.9
  2019 92.3 88.3 88.5 82.9 96.0 98.8 100.3 101.1 93.3 79.4 86.1 94.2
  2020 89.3 89.3 79.0 63.8 70.1 82.7 87.7 85.5 90.3 81.9 85.4 84.6
  2021 85.3 88.3 85.2 80.9 81.3 84.5 92.0 91.3 92.4 82.9 87.8 89.2
  2022 89.2 86.5 85.1 83.0 71.1 91.3 94.0 93.0 90.6 90.1 88.3 84.5
  2023 72.0 80.3 82.9 79.1 80.6 93.7 94.1 96.0 96.9 99.5 94.5 88.5


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 2/29/2024
Next Release Date: 3/29/2024

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