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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 Imports (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 3,930 4,222 3,966 4,632 3,914 951
  1990's 766 1,360 877 2,101 1,846 1,820 1,182 2,604 2,585 2,805
  2000's 3,252 272 122 351 1,067 1,685 1,716 1,604

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