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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) Normal Butane-Butylene Stock Change (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 -1,745
  1990's 1,126 213 440 658 -1,952 1,455 -354 -779 283 125
  2000's 1,050 9 -572 118 97 -276 2,593 194

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