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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 Stock Change (Thousand Barrels per Day)
Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9
  1980's 4 -5 -5 3 5 -7 0
  1990's 5 -5 8 -1 -6 -2 1 1 -2 -3
  2000's -1 0 2 -1 0 1 -1 1

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