View History:    Monthly     Annual   
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Rocky Mountain (PADD 4) Normal Butane-Butylene Stocks at Natural Gas Processing Plants (Thousand Barrels)
Rocky Mountain (PADD 4) Normal Butane-Butylene Stocks at Natural Gas Processing Plants (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1993 62 51 59 59 62 38 35 44 45 40 36 38
  1994 43 58 59 50 66 59 50 35 44 40 40 42
  1995 52 41 45 48 52 49 53 54 47 51 46 42
  1996 37 49 47 49 53 51 40 38 42 40 41 46
  1997 45 46 57 50 51 45 45 47 40 47 50 51
  1998 51 59 60 64 56 59 68 63 64 58 71 67
  1999 63 72 69 61 70 68 71 80 74 67 67 62
  2000 73 71 68 87 90 84 56 58 49 48 47 44
  2001 57 54 51 55 56 60 55 59 63 59 60 59
  2002 55 59 73 61 65 70 55 57 67 69 73 64
  2003 66 70 85 52 58 44 53 53 45 52 49 48
  2004 49 55 64 57 64 57 61 51 51 54 56 53
  2005 41 41 46 43 41 39 43 40 43 41 32 36
  2006 34 34 44 37 37 40 42 50 43 36 39 48
  2007 38 36 45 46 45 35 29 39 38 39 33 36
  2008 30 35 38 28 37 33 24 50 29 30 44 46
  2009 34 39 40 35 40 38 39 34 38 36 41 33
  2010 37 43 44 40 34 29 31 40 31 37 36 35
  2011 28 21 35 35 38 37 41 43 31 42 32 29
  2012 26 29 36 38 36 38 34 27 30 25 23 23
  2013 32 31 36 36 34 41 40 30 51 34 35 35
  2014 33 30 34 31 34


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 7/30/2014
Next Release Date: Last Week of August 2014

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