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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. Normal Butane-Butylene Refinery Net Production (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  2005 -4,241 -2,244 2,431 7,319 7,538 8,436 7,899 7,186 -1,646 -5,191 -6,118 -5,780
  2006 -4,576 -1,059 2,566 6,834 7,967 7,988 8,187 8,070 1,319 -1,148 -5,203 -6,638
  2007 -4,406 -2,110 2,981 7,188 8,468 8,299 7,418 7,645 1,269 -1,848 -5,658 -5,074
  2008 -3,963 -1,488 3,456 7,559

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