View History:    Monthly     Annual   
Download Data (XLS File)
West Coast (PADD 5) Field Production of Isobutane (Thousand Barrels per Day)
West Coast (PADD 5) Field Production of Isobutane (Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 1 1 1 0 1 1 1 1 1 1 1 1
  1982 1 1 1 1 1 1 1 1 1 1 1 1
  1983 0 0 0 0 0 0 0 0 0 0 0 0
  1984 2 2 2 2 2 2 2 2 2 2 2 2
  1985 2 2 2 3 3 3 3 3 3 3 3 3
  1986 3 3 3 3 3 3 3 3 3 3 3 3
  1987 3 4 7 5 8 8 8 9 9 8 10 9
  1988 9 8 9 9 8 8 8 8 8 8 8 7
  1989 7 7 7 6 7 7 7 7 6 7 4 4
  1990 5 7 7 5 7 5 6 6 6 8 7 6
  1991 11 14 12 11 14 12 12 12 12 12 13 12
  1992 11 13 13 13 14 14 13 14 15 15 13 13
  1993 14 15 15 17 15 14 12 14 14 15 14 14
  1994 13 15 14 12 14 15 13 14 14 12 13 13
  1995 13 14 13 13 14 13 13 14 14 16 16 15
  1996 14 15 16 13 9 13 13 17 20 21 21 17
  1997 19 22 20 21 22 22 20 19 22 19 17 15
  1998 10 20 18 20 17 20 19 15 19 19 16 11
  1999 13 11 18 18 20 18 17 12 15 16 12 10
  2000 11 12 11 14 15 17 15 12 15 12 12 11
  2001 13 15 15 14 16 11 14 14 15 16 12 10
  2002 11 15 12 17 15 13 14 13 13 14 12 10
  2003 12 13 12 14 15 14 13 14 16 14 14 12
  2004 12 11 15 21 21 18 14 19 17 17 16 14
  2005 14 16 17 20 20 18 16 17 17 16 14 14
  2006 15 14 14 19 19 17 13 15 17 16 18 15
  2007 14 17 14 18 19 18 17 17 17 18 17 16
  2008 16 13 17 14 20 17 17 16 17 20 18 18
  2009 17 17 15 17 18 18 18 14 16 19 15 15
  2010 15 16 9 9 12 14 12 15 15 15 10 11
  2011 8 11 15 16 16 18 15 16 18 17 17 13
  2012 13 10 17 18 17 18 15 14 18 15 11 11
  2013 11 15 16 11 14 13 15 17 15 5 12 12
  2014 11 12 11 11 9 13 11 10 14 13 12 10
  2015 13 9 8 12 12 14 14 12 13 10 10 10
  2016 14 11 10 12 10 13 10 10 13 11 12 12
  2017 11 13 12 16 19 13 14 14 13 9 11 11
  2018 11 12 11 11 14 16 13 16 14 11 16 14
  2019 11 9 10 13 16 16 15 9 9 11 8 9
  2020 9 14 14 9 8 10 7 6 6 7 7 9
  2021 9 9 10 9 7 8 5 9 8 8 10 9
  2022 8 8 11 13 11 12 5 6 7 6 7 7
  2023 8 7 6 7 7 6 5 4 5 6 6 6
  2024 6 6

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 4/30/2024
Next Release Date: 5/31/2024

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