View History:    Monthly     Annual   
Download Data (XLS File)
Rocky Mountain (PADD 4) Refinery and Blender Net Production of Isobutane-Isobutylene (Thousand Barrels)
Rocky Mountain (PADD 4) Refinery and Blender Net Production of Isobutane-Isobutylene (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 -18 -13 -5 -4 0 2 5 4 -2 -12 -12 -6
  1982 -8 -13 -15 -21 -14 -10 -9 -9 -5 0 -9 0
  1983 0 1 5 5 1 1 0 0 0 10 0 3
  1984 1 6 4 16 9 11 24 8 3 2 1 2
  1985 1 5 5 17 16 8 13 -1 2 9 5 16
  1986 -14 -3 -23 5 17 -6 1 3 27 8 -20 -15
  1987 -3 12 2 -20 -34 -28 -27 -3 -34 -4 15 -11
  1988 8 0 -17 -5 -19 -4 30 -18 9 0 -12 -16
  1989 2 -15 -2 -14 -32 -72 -70 -48 -19 26 -63 -13
  1990 -38 -11 53 -53 -25 -10 0 -12 -5 -25 -39 -9
  1991 -31 1 -45 -7 -10 -27 7 -10 -10 -15 -5 28
  1992 24 -19 27 7 -7 -44 -31 -53 -49 -18 -5 -13
  1993 8 -30 19 -35 -48 -38 3 1 -1 -17 18 -41
  1994 -34 15 35 -10 -29 -39 -63 -57 -14 -48 -41
  1995 -8 -16 15 -68 -62 -65 -70 -32 -21 -65 -30 -3
  1996 -59 -41 11 22 -91 -31 -42 -84 -19 -25 -67 -58
  1997 -17 -44 -40 -61 -35 -37 -90 -46 -17 -54 -45 -49
  1998 -86 -59 -43 -79 -120 -118 -117 -118 -76 -85 -24 -24
  1999 -14 -39 -48 -56 -77 -66 -46 -68 -33 -33 -37 -37
  2000 -64 -53 -40 -25 -77 -52 -68 -33 -53 -30 -35 -15
  2001 -7 -9 -30 -89 -47 -40 -26 -80 -41 -12 -2 -32
  2002 -49 -39 -28 -16 -50 -82 -103 -75 -35 -73 -74 -97
  2003 -48 -39 -45 -25 -129 -44 -54 -69 -58 -73 -54 -54
  2004 -42 -67 -24 -59 -62 -52 -77 -76 -64 -48 -78 -32
  2005 -43 -27 -56 -65 -71 -84 -89 -62 -59 -92 -62 -72
  2006 -11 -2 -33 -21 -22 -20 -20 3 -45 -27 -8 -36
  2007 -24 -4 24 -14 -44 -33 15 -9 -23 -53 -13 -27
  2008 -43 -33 -15 -27 17 -12 -14 1 20 -29 -53 -32
  2009 -15 -14 -47 -15 -4 -20 -18 -39 -8 -38 12 -47
  2010 -1 -20 -46 -23 -4 -24 -11 -16 -8 -35 -6 -10
  2011 -23 -14 3 -19 -49 10 -21 -5 -63 -24 -19 -26
  2012 -29 -20 -52 4 -59 -33 -52 -69 23 -16 10 -16
  2013 -19 -11 -95 -41 -37 -19 -44 -24 -2 -24 -28 -32
  2014 -34 -52 -29 -57


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 6/27/2014
Next Release Date: Last Week of July 2014

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