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Petroleum Navigator
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Download Data (XLS File)
Midwest (PADD 2) Isobutane-Isobutylene Stock Change(Thousand Barrels per Day)
Midwest (PADD 2) Isobutane-Isobutylene Stock Change(Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 7 -3 -7 4 -6 1 0 -9 5 -14 -3 2
  1982 11 4 4 -4 -13 -6 -3 7 -2 16 5 -3
  1983 5 -13 -1 8 3 4 14 -10 7 -10 -8 -10
  1984 -2 6 0 -1 -2 -2 -7 -2 5 -1 -1 1
  1985 2 -4 -16 2 2 -4 -4 -1 -3 4 12 3
  1986 -1 -4 -6 12 -4 3 -3 -3 7 1 10 -9
  1987 -6 -6 -1 -9 5 5 7 0 6 6 6 5
  1988 -8 -9 -2 13 -9 -3 13 -2 3 -1 2 -8
  1989 -4 -10 2 -2 9 5 3 7 1 -1 7 -14
  1990 -1 -11 0 4 15 5 4 -5 12 -17 5 -9
  1991 -4 -3 12 -13 -5 5 4 -1 10 2 -3 -2
  1992 -1 5 2 4 -4 -1 -4 -6 14 6 0 -4
  1993 -10 2 10 12 -5 -1 6 4 7 -12 -17 -6
  1994 3 8 10 -11 -12 -5 15 22 -1 -22 -26 0
  1995 -5 1 9 3 3 8 -3 18 8 -4 -28 -1
  1996 -13 -5 2 4 9 -1 10 6 -5 -7 -1 -5
  1997 -7 -10 -3 13 13 7 -2 -1 3 -11 -2 -1
  1998 -10 17 -1 3 -5 6 -1 16 5 -26 -8 -3
  1999 -2 -5 -5 2 8 2 6 0 -4 -3 3 -7
  2000 -1 -5 5 2 -2 2 6 8 -2 -4 -5 0
  2001 -8 -7 2 5 2 3 7 1 0 -9 -8 -1
  2002 3 2 -4 4 9 0 0 8 0 -6 -7 -3
  2003 8 -4 1 -8 -4 13 4 1 4 -1 0 -13
  2004 -3 -3 16 0 -1 2 3 5 14 -31 2 0
  2005 -4 2 5 -4 3 2 5 3 -7 -2 -6 5
  2006 -3 -1 4 7 0 5 3 4 1 1 -1 -6
  2007 -9 5 5 2 7 8 9 -2 5 -3 -13 -12
  2008 -5 -9 6 0 -1 5 9 3 -5 -3 3 -7
  2009 -2 -5 -9 4 0 -1 4 2

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 9/29/2009
Next Release Date: Last Week of October 2009

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