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Note: These data are available in spreadsheet format by clicking the ''Download Series History'' link on the previous page (with drop-down menu bar at top).
 View History:    Monthly     Annual   
East Coast (PADD 1) 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 1 1 2 1 1 6 7 8 8 5 7 4
  1982 5 6 5 6 8 9 6 6 7 5 4 3
  1983 7 1 1 4 8 3 1 2 2 1 2 2
  1984 1 1 4 4 4 1 5 5 3 1 2 2
  1985 2 1 0 1 2 3 3 4 6 4 4 1
  1986 0 1 1 2 2 2 3 1 1 3 3 2
  1987 3 3 1 2 3 3 1 2 3 3 1 1
  1988 2 1 2 2 2 1 2 2 2 2 3 1
  1989 1 2 2 1 1 2 2 2 3 2 1 1
  1990 1 2 2 2 2 1 1 1 1 2 0
  1991 0 1 1 2 1 1 1 1 1 1 1 1
  1992 2 1 3 1 1 1 2 2 2 2 1 1
  1993 4 3 4 4 2 3 3 5 4 4 5 3
  1994 4 3 3 3 5 3 6 4 3 4 3 3
  1995 3 4 4 1 2 3 4 5 7 5 3 4
  1996 4 3 2 4 3 2 2 1 3 1 1 4
  1997 4 1 1 3 3 2 2 2 3 2 2 2
  1998 3 2 2 3 3 3 2 1 3 3 1 1
  1999 2 2 3 4 3 2 1 3 2 1 4 0
  2000 1 2 1 0 1 4 2 3 4 5 0 1
  2001 1 3 3 3 4 4 4 3 4 3 1 3
  2002 3 3 2 3 4 2 4 3 1 2 3 0
  2003 2 2 2 4 2 2 3 4 3 4 2 2
  2004 3 4 2 4 4 3 5 1 2 2 5 2
  2005 3 5 4 5 3 4 4 3 3 3 3 3
  2006 11 13 7 3 15 8 12 11 10 12 12 15
  2007 3 2 4 3 11 13 18 15 17 15 12 13
  2008 12 12 16 15


Updated on 6/26/2008
Source: U.S. Energy Information Administration
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