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| Midwest (PADD 2) Field Production of Normal Butane (Thousand Barrels per Day) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | 60 | 54 | 52 | 54 | 52 | 49 | 46 | 48 | 46 | 47 | 44 | 49 |
| 1982 | 53 | 52 | 44 | 49 | 44 | 39 | 40 | 43 | 38 | 38 | 48 | 48 |
| 1983 | 51 | 43 | 40 | 38 | 38 | 43 | 37 | 41 | 39 | 43 | 50 | 53 |
| 1984 | 42 | 39 | 35 | 35 | 38 | 37 | 37 | 36 | 36 | 41 | 44 | 45 |
| 1985 | 44 | 44 | 41 | 39 | 37 | 39 | 41 | 39 | 40 | 41 | 42 | 42 |
| 1986 | 47 | 46 | 42 | 35 | 33 | 35 | 35 | 35 | 34 | 36 | 42 | 44 |
| 1987 | 43 | 43 | 37 | 37 | 35 | 33 | 35 | 34 | 35 | 39 | 44 | 45 |
| 1988 | 42 | 41 | 40 | 40 | 40 | 37 | 38 | 37 | 39 | 40 | 40 | 45 |
| 1989 | 42 | 40 | 40 | 42 | 40 | 38 | 38 | 36 | 35 | 36 | 39 | 41 |
| 1990 | 42 | 40 | 37 | 36 | 35 | 34 | 33 | 37 | 38 | 43 | 40 | 39 |
| 1991 | 41 | 40 | 36 | 36 | 36 | 35 | 34 | 35 | 35 | 35 | 40 | 42 |
| 1992 | 40 | 39 | 36 | 34 | 34 | 34 | 33 | 35 | 37 | 37 | 38 | 39 |
| 1993 | 42 | 37 | 36 | 36 | 34 | 36 | 33 | 36 | 34 | 36 | 44 | 44 |
| 1994 | 40 | 36 | 37 | 43 | 44 | 40 | 35 | 34 | 38 | 43 | 45 | 41 |
| 1995 | 41 | 40 | 37 | 40 | 38 | 38 | 39 | 41 | 37 | 41 | 40 | 39 |
| 1996 | 38 | 34 | 36 | 36 | 27 | 27 | 29 | 29 | 39 | 34 | 40 | 41 |
| 1997 | 41 | 41 | 31 | 28 | 30 | 29 | 36 | 41 | 39 | 38 | 34 | 34 |
| 1998 | 37 | 34 | 37 | 38 | 35 | 32 | 33 | 33 | 35 | 38 | 39 | 34 |
| 1999 | 36 | 35 | 34 | 30 | 30 | 31 | 31 | 30 | 32 | 36 | 32 | 36 |
| 2000 | 35 | 32 | 28 | 33 | 28 | 26 | 29 | 29 | 33 | 33 | 30 | 30 |
| 2001 | 27 | 33 | 30 | 27 | 26 | 26 | 26 | 26 | 32 | 30 | 32 | 34 |
| 2002 | 32 | 25 | 29 | 34 | 36 | 35 | 35 | 35 | 35 | 36 | 33 | 27 |
| 2003 | 26 | 27 | 28 | 23 | 23 | 24 | 31 | 31 | 33 | 37 | 35 | 36 |
| 2004 | 36 | 35 | 30 | 31 | 35 | 36 | 31 | 29 | 35 | 38 | 34 | 34 |
| 2005 | 36 | 37 | 37 | 33 | 29 | 34 | 29 | 28 | 26 | 25 | 25 | 25 |
| 2006 | 33 | 30 | 22 | 24 | 26 | 26 | 31 | 32 | 31 | 35 | 35 | 29 |
| 2007 | 29 | 28 | 26 | 28 | 26 | 31 | 29 | 31 | 24 | 35 | 37 | 29 |
| 2008 | 24 | 32 | 27 | 30 | 29 | 29 | 26 | 25 | 32 | 28 | 29 | 32 |
| 2009 | 38 | 37 | 36 | 36 | 34 | 35 | 35 | 35 | 36 | 34 | 35 | 36 |
| 2010 | 38 | 37 | 37 | 39 | 39 | 39 | 41 | 42 | 43 | 43 | 42 | 40 |
| 2011 | 40 | 38 | 40 | 44 | 44 | 44 | 45 | 46 | 49 | 48 | 47 | 48 |
| 2012 | 50 | 51 | 49 | 45 | 48 | 45 | 45 | 46 | 48 | 50 | 48 | 51 |
| 2013 | 53 | 55 | 52 | 45 | 56 | 58 | 48 | 53 | 58 | 62 | 65 | 62 |
| 2014 | 64 | 59 | 60 | 61 | 67 | 68 | 74 | 76 | 80 | 80 | 82 | 90 |
| 2015 | 91 | 89 | 76 | 94 | 97 | 96 | 98 | 97 | 100 | 105 | 108 | 99 |
| 2016 | 103 | 108 | 103 | 95 | 92 | 97 | 97 | 95 | 93 | 93 | 96 | 86 |
| 2017 | 95 | 101 | 99 | 96 | 96 | 98 | 100 | 103 | 99 | 114 | 115 | 114 |
| 2018 | 115 | 113 | 115 | 110 | 112 | 110 | 112 | 115 | 125 | 127 | 128 | 126 |
| 2019 | 121 | 120 | 121 | 128 | 126 | 126 | 133 | 135 | 138 | 140 | 144 | 143 |
| 2020 | 139 | 138 | 138 | 118 | 98 | 102 | 109 | 113 | 117 | 121 | 132 | 131 |
| 2021 | 123 | 111 | 120 | 126 | 125 | 122 | 116 | 125 | 128 | 130 | 134 | 132 |
| 2022 | 126 | 126 | 120 | 113 | 128 | 137 | 134 | 136 | 137 | 132 | 131 | 117 |
| 2023 | 129 | 133 | 140 | 148 | 149 | 152 | 152 | 145 | 153 | 149 | 148 | 148 |
| 2024 | 134 | 144 | 139 | 144 | 146 | 145 | 144 | 147 | 148 | 153 | 160 | 153 |
| 2025 | 149 | 145 | 153 | 153 | 153 | 148 | 157 | 156 | ||||
| - = 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 |