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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   
U.S. Isobutylene Refinery Net Production (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  2005 36 53 22 -5 -100 -93 -36 65 24 52 27 7
  2006 56 82 31 61 65 59 60 47 61 6 86
  2007 122 49 55 45 60 61 47 36 66 79 12 17
  2008 121 62 31 30

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