View History:  Annual  
Download Data (XLS File)
Illinois Crude Oil Reserves Revision Decreases (Million Barrels)
Illinois Crude Oil Reserves Revision Decreases (Million Barrels)
Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9
  1970's 6 17 10
  1980's 4 5 6 5 6 6 3 3 4 4
  1990's 3 4 2 2 1 1 23 6 32 1
  2000's 8 11 15 5 2 1 6 0 49 1
  2010's 4 2 1 11 1 10 13 1 W W


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 12/30/2022
Next Release Date: 12/29/2023

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