View History:    Monthly     Annual   
Download Data (XLS File)
Refining District Oklahoma-Kansas-Missouri Field Production of Isobutane (Thousand Barrels per Day)
Refining District Oklahoma-Kansas-Missouri Field Production of Isobutane (Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1993 18 21 22 22 22 21 21 20 22 22 15 16
  1994 19 22 21 16 15 16 21 21 20 14 14 19
  1995 18 18 19 17 19 17 17 15 17 15 17 19
  1996 18 20 21 21 30 25 26 26 15 21 16 15
  1997 14 15 23 27 26 26 19 14 14 15 19 19
  1998 13 18 14 14 16 20 15 19 18 15 14 13
  1999 12 15 15 19 17 16 18 18 17 13 16 12
  2000 12 14 19 14 20 21 18 16 14 14 14 12
  2001 11 14 16 22 21 21 21 21 20 20 19 18
  2002 15 20 18 14 13 13 14 14 14 14 13 19
  2003 20 19 16 20 20 20 15 17 14 12 10 11
  2004 10 12 16 15 11 10 14 16 13 10 13 11
  2005 10 10 10 13 17 13 16 17 17 18 17 16
  2006 11 14 18 19 18 18 14 14 15 10 11 16
  2007 12 16 19 18 18 16 14 10 17 12 11 15
  2008 18 12 17 15 14 16 19 18 13 19 18 13
  2009 11 15 17 17 17 20 19 16 12 13 15 11
  2010 13 18 20 18 18 20 20 15 16 20 14 13
  2011 13 19 22 23 22 21 21 22 23 23 24 23
  2012 17 15 17 24 24 24 23 24 24 24 24 19
  2013 16 16 18 25 22 20 29 27 29 23 22 20
  2014 18 25 27 27 28 28 28 28 29 29 26 20
  2015 19 19 28 23 20 20 20 20 21 24 21 29
  2016 24 24 24 30 32 31 32 33 32 32 32 29
  2017 22 23 24 30 30 30 31 30 32 26 26 26
  2018 25 24 27 34 37 36 36 33 29 30 29 31
  2019 35 35 28 30 29 30 30 30 31 31 30 30
  2020 29 29 30 35 31 34 37 36 36 32 28 27
  2021 33 22 29 28 28 32 31 28 29 30 28 28
  2022 27 27 31 33 28 27 30 30 31 36 37 35
  2023 34 34 27 26 27 24 30 29 30 29 32 31
  2024 23 27 31 31 31 31 31 31 29 23 24 23
  2025 22 21 23 23 24 30 28 30

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 10/31/2025
Next Release Date: 11/28/2025

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