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Rocky Mountain (PADD 4) Isobutane-Isobutylene Stocks in Pipelines (Thousand Barrels)
Rocky Mountain (PADD 4) Isobutane-Isobutylene Stocks in Pipelines (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1993 64 63 68 68 67 91 68 67 63 63 63 63
  1994 39 39 43 44 44 42 41 40 40 40 39 39
  1995 38 39 40 40 41 42 40 41 41 40 38 38
  1996 38 38 39 40 41 41 41 41 40 39 38 38
  1997 39 38 38 40 40 40 39 39 39 38 39 39
  1998 39 39 40 40 41 41 42 42 42 41 41 40
  1999 40 40 41 41 42 41 41 41 40 40 39 87
  2000 87 87 88 88 90 90 88 88 88 88 88 88
  2001 89 89 88 89 89 89 88 88 85 85 88 88
  2002 88 88 89 88 89 88 88 89 88 88 88 88
  2003 88 88 89 89 91 90 89 89 90 89 88 88
  2004 88 89 89 67 67 69 69 69 69 69 69 68
  2005 68 68 70 69 68 69 69 69 69 69 69 70
  2006 68 69 70 71 71 71 71 71 66 65 66 64
  2007 63 65 66 65 66 65 65 65 65 65 64 64
  2008 64 65 65 66 65 65 66 67 67 66 52 53
  2009 51 52 52 51 51 50 51 52 52 52 52 51
  2010 41 46 35 46 46 47 48 48 48 48 48 47
  2011 46 46 46 46 46 46 46 45 46 46 45 44
  2012 44 46 47 47 47 49 49 49 47 47 45 45
  2013 45 47 48

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 5/30/2013
Next Release Date: Last Week of June 2013

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