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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   
Midwest (PADD 2) Isobutane-Isobutylene Field Production (Thousand Barrels)
Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9
  1980's 6,795 6,338 6,209 7,271 7,803 7,384 7,288 7,535 7,503
  1990's 7,542 8,458 8,587 8,219 7,346 7,025 8,477 7,727 6,341 6,343
  2000's 6,384 8,129 7,018 7,438 6,410 6,905 6,795 7,103


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