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Midwest (PADD 2) Isobutane-Isobutylene Refinery and Blender Net Inputs (Thousand Barrels per Day)
Midwest (PADD 2) Isobutane-Isobutylene Refinery and Blender Net Inputs (Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 34 56 63 49 61 42 40 48 44 52 49 55
  1982 45 50 49 50 42 49 49 43 44 37 42 48
  1983 46 38 34 36 37 21 41 40 40 40 45 43
  1984 45 46 44 39 49 52 46 46 42 43 47 49
  1985 41 45 44 39 39 49 45 46 44 47 51 46
  1986 44 38 41 34 41 47 45 49 46 42 46 47
  1987 49 44 46 50 50 48 48 46 50 41 46 42
  1988 39 44 46 47 50 52 49 47 40 35 49 48
  1989 46 49 42 43 44 46 43 45 46 39 42 46
  1990 46 43 44 40 40 43 46 50 46 45 45 47
  1991 40 47 44 57 60 52 48 52 45 34 42 45
  1992 47 44 48 41 48 50 51 43 39 36 45 48
  1993 44 42 44 40 47 46 41 46 44 51 51 47
  1994 40 38 37 37 46 45 44 42 31 33 45 47
  1995 44 38 41 34 37 33 39 36 40 44 46 38
  1996 43 35 34 34 33 37 33 35 38 30 35 29
  1997 29 27 31 37 29 30 30 25 29 30 31 27
  1998 24 25 24 27 33 30 36 33 22 32 30 27
  1999 27 32 30 32 32 32 29 29 29 23 18 25
  2000 24 20 25 29 30 30 32 32 31 24 22 20
  2001 22 23 28 33 37 31 29 30 34 33 27 33
  2002 35 34 36 33 32 33 36 35 37 34 38 31
  2003 29 30 24 31 30 30 31 33 24 20 25 24
  2004 35 30 29 33 36 40 40 40 43 38 37 35
  2005 31 31 27 36 39 44 42 45 44 46 46 37
  2006 40 40 41 48 47 49 53 52 47 36 33 44
  2007 42 37 39 50 53 45 48 49 46 37 45 45
  2008 43 40 39 45 49 55

Release Date: 8/26/2008
Next Release Date: Last Week of September 2008

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