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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) Normal Butane-Butylene Field Production (Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 6 6 6 6 6 6 5 4 5 5 5 4
  1982 4 4 4 5 5 5 5 4 4 4 4 4
  1983 4 4 4 4 3 4 4 4 4 4 4 3
  1984 5 5 5 5 4 5 5 5 5 5 5 5
  1985 4 4 5 5 3 5 5 5 5 5 5 4
  1986 5 4 5 5 5 4 4 3 3 3 4 4
  1987 4 4 4 4 4 3 4 3 4 4 4 4
  1988 4 4 4 4 4 4 4 4 4 4 4 4
  1989 4 4 4 4 3 3 4 4 5 5 5 4
  1990 3 4 4 4 4 2 3 4 4 4 4 4
  1991 4 4 4 4 3 2 2 3 4 4 4 4
  1992 4 4 4 4 2 4 3 4 4 4 5 5
  1993 4 4 4 4 3 4 4 4 4 4 4 4
  1994 3 4 4 4 3 3 4 4 4 4 4 4
  1995 4 3 4 4 3 4 4 3 4 4 4 4
  1996 3 3 3 3 3 3 3 2 3 3 3 3
  1997 3 4 4 4 3 4 4 4 4 4 4 3
  1998 4 4 4 4 3 4 3 4 4 4 4 4
  1999 4 4 4 4 4 3 4 4 4 4 4 4
  2000 3 4 4 4 4 4 4 4 3 3 4 4
  2001 3 3 4 4 3 4 4 4 4 4 4 4
  2002 3 3 3 3 3 4 4 4 3 3 3 3
  2003 3 3 3 3 4 3 2 2 4 4 2 2
  2004 2 3 4 4 3 3 3 3 4 2 3 3
  2005 2 3 3 2 3 3 3 3 3 3 3 4
  2006 4 4 4 4 5 5 5 4 4 3 4 4
  2007 4 3 4 4 4 4 4 3 4 3 4 4
  2008 3 3 3 3

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