View History:    Monthly     Annual   
Download Data (XLS File)
Midwest (PADD 2) Refinery and Blender Net Input of Isobutane (Thousand Barrels per Day)
Midwest (PADD 2) Refinery and Blender Net Input of Isobutane (Thousand Barrels per Day)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  2009 48 48 47 44 51 54 46 47 46 41 44 43
  2010 41 37 35 37 46 47 41 48 39 33 42 46
  2011 45 41 49 45 38 41 44 46 47 39 46 39
  2012 38 39 36 41 42 50 50 53 56 47 48 47
  2013 41 41 44 35 37 52 49 48 50 49 45 47
  2014 42 43 47 45 51 48 51 45 50 42 44 49
  2015 41 49 50 44 38 41 39 54 54 45 51 48
  2016 54 50 57 53 49 50 54 54 54 52 52 53
  2017 51 48 45 43 50 48 50 53 54 41 46 47
  2018 42 44 56 59 56 57 46 51 49 51 52 53
  2019 46 51 49 44 41 41 51 53 55 53 50 52
  2020 53 55 43 30 39 39 43 44 48 54 51 42
  2021 44 40 47 38 44 54 53 53 46 53 57 59
  2022 57 51 53 58 59 60 57 62 63 66 68 64
  2023 57 59 55 48 55 62 62 59 62 69 61 69
  2024 58 64 62 48 57 61 55 60 61 59 61 59
  2025 56 54 58 53 58 64 60 63 63 62 69 66
  2026 65 59 49

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 5/29/2026
Next Release Date: 6/30/2026

Referring Pages: