View History:    Monthly     Annual   
Download Data (XLS File)
Rocky Mountain (PADD 4) Gas Plant Production of Isobutane-Isobutylene (Thousand Barrels per Day)
Rocky Mountain (PADD 4) Gas Plant Production of Isobutane-Isobutylene (Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 0 0 0 0 0 0 0 0 0 0 0 0
  1982 0 0 0 0 0 0 0 0 0 0 0 0
  1983 0 0 0 0 0 0 0 0 0 0 0 0
  1984 4 4 4 4 4 4 5 4 4 5 5 5
  1985 5 5 5 5 5 4 5 5 6 5 5 5
  1986 5 5 5 5 5 5 5 5 5 5 5 5
  1987 5 6 6 6 6 6 5 6 6 6 6 7
  1988 7 8 8 8 8 8 8 7 7 8 8 8
  1989 7 8 8 8 8 6 7 7 8 8 8 8
  1990 8 8 8 8 8 8 7 7 7 7 8 7
  1991 8 9 8 9 10 10 11 10 11 10 9 9
  1992 10 10 10 11 11 11 11 10 11 11 13 10
  1993 9 10 11 11 10 10 10 10 10 11 10 10
  1994 8 9 9 10 10 10 10 10 11 10 10 11
  1995 10 10 10 10 11 11 11 11 10 10 10 11
  1996 10 10 10 10 10 10 10 10 9 9 9 9
  1997 9 9 10 10 10 10 10 9 11 10 9 10
  1998 9 10 10 10 10 11 11 10 10 10 10 9
  1999 10 10 10 10 10 12 11 11 11 11 12 12
  2000 12 11 12 12 12 11 11 12 12 12 12 11
  2001 11 11 11 12 12 12 11 11 11 10 11 10
  2002 10 12 11 11 11 11 10 11 11 12 11 11
  2003 10 11 11 10 10 11 10 11 10 11 10 10
  2004 10 11 11 11 11 11 11 11 11 11 10 10
  2005 9 10 10 10 10 10 10 10 10 10 10 9
  2006 9 9 9 9 9 9 9 9 9 8 9 8
  2007 9 9 9 8 8 9 8 9 10 9 10 10
  2008 10 11 12 11 12 12 12 12 12 11 11 10
  2009 11 11 11 12 12 12 12 12 12 13 13 12
  2010 13 13 13 14 14 13 13 13 13 13 13 13
  2011 14 14 14 15 14 13 14 14 14 15 14 14
  2012 14 14 14 14 14 13 13 13 16 16 16 16
  2013 16 16 17 17 16 16 15 17 17 16 17 16
  2014 17 17 19 19 18 18 18 19


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 10/30/2014
Next Release Date: Last Week of November 2014

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