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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   
Rocky Mountain (PADD 4) Ethane-Ethylene Field Production (Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 0 0 0 0 0 0 0 1 0 1 1 0
  1982 1 1 1 1 0 0 0 0 0 0 0 1
  1983 1 1 1 1 0 1 1 1 1 1 1 1
  1984 8 7 7 8 7 8 8 7 10 17 15 9
  1985 10 12 11 10 10 9 9 11 12 13 13 15
  1986 15 13 13 16 15 16 11 12 11 11 12 13
  1987 14 14 14 14 14 13 14 16 13 13 18 23
  1988 24 25 27 27 32 32 30 31 36 40 38 37
  1989 41 34 36 34 29 21 25 26 27 25 21 25
  1990 30 25 25 24 23 23 14 28 31 38 41 38
  1991 38 40 38 38 36 34 35 35 31 36 33 31
  1992 30 35 35 39 39 38 36 25 28 30 31 31
  1993 30 37 45 44 39 37 40 30 28 24 21 20
  1994 22 27 28 28 29 37 33 42 44 47 50 47
  1995 45 35 37 36 42 36 35 31 33 35 36 35
  1996 60 38 57 58 53 52 54 55 55 57 61 61
  1997 57 61 62 55 48 55 56 53 58 58 34 42
  1998 31 35 52 53 45 39 39 38 39 36 28 24
  1999 35 29 36 51 57 67 69 65 68 75 77 81
  2000 80 85 85 84 84 89 90 89 94 79 90 70
  2001 71 89 87 93 92 87 84 87 91 90 91 64
  2002 79 89 82 92 90 86 88 93 96 99 81 72
  2003 100 108 102 90 60 76 68 66 74 78 90 84
  2004 88 68 83 77 83 87 86 88 92 92 93 91
  2005 90 92 91 86 86 78 77 88 83 78 90 46
  2006 82 68 88 82 85 81 83 77 83 82 85 87
  2007 80 78 92 89 86 89 84 87 96 92 111 100
  2008 100 110 112 116

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