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Download Data (XLS File)
West Coast (PADD 5) Isobutane-Isobutylene Stock Change(Thousand Barrels per Day)
West Coast (PADD 5) Isobutane-Isobutylene Stock Change(Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 -2 -2 -3 -1 1 6 3 0 1 -2 1 -3
  1982 -2 -2 -1 -3 -2 1 -1 1 0 1 -1 2
  1983 1 -1 1 1 -1 2 4 -4 1 -1 -1 1
  1984 -2 -2 -1 -1 3 0 1 0 -1 -1 0 1
  1985 0 0 1 -1 0 0 0 -1 -1 0 -3 3
  1986 -3 0 8 5 -3 -4 3 -3 -1 -2 1 -1
  1987 -1 0 0 -1 2 1 1 2 1 0 1 -1
  1988 1 -1 0 -2 -2 1 2 1 23 -11 -5 -4
  1989 2 -1 -4 5 0 1 1 1 0 -4 -2 -5
  1990 3 -1 -2 1 3 -1 3 -2 1 -1 -3 -1
  1991 4 1 3 -4 2 2 -2 2 -1 -3 -2 -1
  1992 2 0 -1 0 3 2 -1 1 1 -1 -4 -1
  1993 3 0 4 0 2 2 0 -2 -1 1 -2 3
  1994 -4 -1 0 0 -1 2 4 2 -4 -2 -1 -1
  1995 0 0 2 -3 1 2 2 0 2 -2 -1 -4
  1996 -1 2 -3 6 -7 7 -4 2 3 1 -6 -4
  1997 -1 4 -2 1 1 3 1 -2 4 2 -3 -4
  1998 0 3 -2 -3 -1 5 0 -2 -1 2 -5 -1
  1999 -2 5 0 2 -2 7 -5 3 -1 -1 -6
  2000 -3 4 0 3 -1 2 7 -4 -5 1 1 1
  2001 -4 -4 5 1 3 -2 1 -3 0 1 -1 -3
  2002 -2 0 4 1 0 1 -3 1 0 5 -6 -4
  2003 1 2 3 3 -4 5 -3 3 4 2 -1 -5
  2004 -1 -3 -3 1 3 0 0 2 5 -5 1 1
  2005 -1 2 -4 2 -5 3 -1 2 4 0 -2 -6
  2006 3 3 1 0 3 1 -1 -4 -1 -6 3 0
  2007 -4 6 1 4 2 -3 -1 0 1 -4 1 -1
  2008 9 -6 5 -4 0 -4 -2 3 -2 0 -4 3
  2009 0 6 -2 -2 1 3 -4 2

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 10/29/2009
Next Release Date: Last Week of November 2009

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