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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   
Rocky Mountain (PADD 4) Normal Butane-Butylene 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 2,762 2,321 2,110 1,708 1,510 1,403 1,466 1,416 1,027
  1990's 1,040 1,116 569 845 1,012 923 1,277 1,012 754 764
  2000's 1,501 1,057 858 852 743 592 607 388

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