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Illinois Field Production of Crude Oil (Thousand Barrels per Day)
Illinois Field Production of Crude Oil (Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 65 63 63 68 68 64 65 67 66 66 68 68
  1982 60 60 76 75 72 79 80 82 84 82 82 78
  1983 83 83 83 78 79 82 80 82 82 79 82 68
  1984 75 70 77 78 77 78 80 82 80 85 83 82
  1985 74 74 82 87 84 82 87 86 85 88 86 82
  1986 86 95 81 79 73 73 72 65 72 70 63 68
  1987 65 68 67 66 64 67 66 65 66 65 63 68
  1988 59 63 65 63 62 66 59 64 62 58 59 58
  1989 60 54 57 55 57 57 56 57 57 57 57 47
  1990 60 56 56 53 53 52 57 57 54 55 56 47
  1991 50 51 54 46 55 52 56 54 53 54 50 51
  1992 52 53 52 53 51 54 53 52 54 52 54 53
  1993 48 46 50 49 47 47 47 49 50 45 49 45
  1994 41 48 52 49 48 48 46 47 47 45 46 46
  1995 45 44 47 45 44 45 44 45 45 44 44 41
  1996 40 38 44 42 42 43 42 45 46 44 43 40
  1997 40 43 45 43 43 44 45 46 47 45 46 43
  1998 42 40 38 39 37 37 37 36 37 36 37 36
  1999 32 37 33 35 32 33 32 33 33 30 34 31
  2000 32 35 33 34 33 35 34 33 33 33 33 33
  2001 27 28 28 28 29 27 27 28 26 28 27 27
  2002 28 28 26 29 30 32 34 31 30 32 34 30
  2003 32 31 33 33 32 32 33 32 31 32 30 33
  2004 28 29 31 31 30 30 30 30 31 30 31 30
  2005 26 28 30 29 28 29 28 28 28 27 27 28
  2006 28 28 29 29 29 29 28 29 28 28 28 28
  2007 26 24 28 26 27 26 27 27 27 27 26 25
  2008 26 24 26 27 25 26 27 26 27 26 25 25
  2009 23 25 27 25 25 25 25 25 26 25 24 25
  2010 22 26 26 27 24 26 25 24 25 25 24 24
  2011 23 22 26 24 23 25 25 26 26 27 27 26
  2012 26 27 27 27 27 27 27 27 26 27 27 25
  2013 26 26 26 26 26 25 27 27 26 26 26 26
  2014 23 23 25 27 26 26 27 27 27 28 26 28
  2015 26 24 24 28 26 26 26 26 27 27 25 27
  2016 22 24 25 24 23 25 22 24 24 23 23 23
  2017 22 24 23 23 22 23 22 23 23 22 23 23
  2018 19 22 23 22 24 23 24 25 23 24 24 23
  2019 22 21 23 23 23 20 23 23 23 23 23 24
  2020 24 22 21 15 11 21 21 20 20 20 19 20
  2021 19 16 21 20 19 20 19 20 20 19 20 19
  2022 18 18 20 19 19 20 18 19 19 19 19 18
  2023 19 20 19 18 19 19 18 19 19

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 11/30/2023
Next Release Date: 12/29/2023

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