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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. Isobutane-Isobutylene Refinery Net Input (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  2005 3,467 3,535 3,640 3,974 4,383 4,658 4,760 4,740 4,093 3,987 3,988 3,796
  2006 4,497 3,954 4,562 5,466 6,347 6,146 6,030 6,566 5,902 5,571 5,157 6,207
  2007 4,948 4,507 5,274 5,460 6,333 5,924 6,402 6,271 6,147 5,574 6,029 5,865
  2008 5,664 5,230 6,173 6,123

Updated on 7/18/2008
Source: U.S. Energy Information Administration
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