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Refining District Minnesota-Wisconsin-North Dakota-South Dakota Refinery and Blender Net Input of Isobutane (Thousand Barrels)
Refining District Minnesota-Wisconsin-North Dakota-South Dakota Refinery and Blender Net Input of Isobutane (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  2009 31 32 30 25 43 42 53 49 64 38 38 61
  2010 43 38 29 19 15 51 56 55 54 58 68 44
  2011 34 6 11 53 49 47 50 46 53 63 33 43
  2012 52 43 44 25 35 22 45 34 44 37 39 38
  2013 34 35 29 32 25 16 43 41 56 38 43 43
  2014 33 35 41 51 47 48 53 54 49 55 59 37
  2015 49 44 53 65 59 58 47 41 39 51 54 44
  2016 52 45 55 56 57 59 50 56 28 55 36 46
  2017 40 44 50 6 7 45 53 49 53 47 44 34
  2018 63 26 49 33 32 31 36 45 44 53 62 87
  2019 75 49 63 80 53 34 44 59 50 53 55 68
  2020 67 64 40 32 47 45 49 62 66 52 43 38
  2021 40 47 74 72 84 64 71 82 30 36 54 40
  2022 33 27 38 37 50 69 60 60 70 86 79 42
  2023 57 56 74 75 75 69 79 70 86 62 78 85
  2024 85 86 101 99 103 60 40 86 85 90 92 63
  2025 91 77 96 80 108 116 113 101 96 56 67 75
  2026 68

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 3/31/2026
Next Release Date: 4/30/2026

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