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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   
West Coast (PADD 5) 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 1,727 1,333 1,717 1,348 1,127 656
  1990's 364 225 180 83 335 897 470 68
  2000's 21 22 25 11 40 25

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