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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 Field Production (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 42,547 39,777 36,390 36,268 46,470 46,622 51,402 52,547 54,473
  1990's 55,241 61,511 69,060 70,057 71,316 67,555 70,207 69,661 66,179 68,278
  2000's 68,949 72,436 73,459 66,974 61,488 61,502 59,357 64,143

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