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Midwest (PADD 2) Refinery and Blender Net Production of Isobutane-Isobutylene(Thousand Barrels per Day)
Midwest (PADD 2) Refinery and Blender Net Production of Isobutane-Isobutylene(Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1982 0
  1983 0 0 2 0 2 0 0 1 1 0
  1984 1 0 1 0 1 0 1 1 0 0 0 2
  1985 0 0 1 0 0 0 0 0 1 -1 2 0
  1986 2 -4 -2 -4 -1 0 0 -1 1 -1 1 0
  1987 1 2 1 -1 0 1 0 0 2 0 0 -1
  1988 0 0 1 0 1 1 1 1 -1 -1 0 -1
  1989 0 1 -4 -1 1 1 1 -1 1 0 0 2
  1990 0 1 2 2 2 0 -1 2 1 2 0 1
  1991 0 0 -2 -4 -1 -2 1 -3 -1 -1 0 -2
  1992 0 2 2 5 3 -2 2 2 2 1 1 4
  1993 0 3 5 3 1 3 1 2 0 0 1 4
  1994 4 1 3 1 -1 0 4 8 -1 -3 0 3
  1995 -2 1 3 3 3 3 6 3 -1 7 1 1
  1996 3 0 3 -3 1 4 3 0 5 3 6 1
  1997 2 1 2 6 4 3 3 4 3 2 0 2
  1998 0 -2 2 8 2 4 4 3 -2 0 -1 1
  1999 3 4 1 4 5 1 2 2 -4 0 -3 0
  2000 -3 0 -4 -3 0 -3 -1 -1 -6 2 2 -1
  2001 2 -1 3 -1 3 0 -3 -3 -4 -7 -4 -7
  2002 -5 -3 -3 -2 -3 -2 -4 -4 -2 -10 -9 -10
  2003 -3 -8 -7 -8 -4 -1 -2 -2 -1 -6 -9 -5
  2004 -6 -5 -8 -3 -8 -4 -5 -5 4 0 2 1
  2005 -3 -6 -4 -7 -9 -6 -6 -2 -9 -9 0 0
  2006 5 5 -1 2 3 2 5 7 5 5 2 1
  2007 3 3 4 3 2 5 2 0 3 2 -3 -3
  2008 -5 -2 -1 3 2 2 -3

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 9/30/2008
Next Release Date: Last Week of October 2008

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