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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 Butylene Refinery Net Production (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  2005 110 -18 147 778 572 617 299 223 -161 -512 -396 92
  2006 -199 -111 14 -59 199 65 -429 -124 -509 14 -426 -226
  2007 -483 -154 60 288 -71 99 124 -27 -127 -209 -376 -486
  2008 -575 -226 -156 -267

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