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| Refining District Texas Inland Field Production of Isobutane (Thousand Barrels per Day) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1993 | 31 | 32 | 32 | 33 | 33 | 34 | 34 | 33 | 33 | 34 | 32 | 31 |
| 1994 | 31 | 31 | 32 | 32 | 32 | 33 | 33 | 33 | 32 | 32 | 32 | 32 |
| 1995 | 31 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 34 | 33 | 33 | 32 |
| 1996 | 31 | 31 | 32 | 33 | 32 | 32 | 32 | 33 | 32 | 34 | 32 | 31 |
| 1997 | 30 | 31 | 31 | 31 | 32 | 30 | 31 | 32 | 31 | 31 | 31 | 32 |
| 1998 | 33 | 33 | 33 | 34 | 32 | 32 | 30 | 32 | 32 | 32 | 30 | 29 |
| 1999 | 30 | 31 | 31 | 31 | 31 | 32 | 32 | 31 | 32 | 32 | 32 | 31 |
| 2000 | 31 | 31 | 33 | 33 | 32 | 33 | 33 | 33 | 33 | 32 | 31 | 26 |
| 2001 | 25 | 32 | 34 | 32 | 34 | 35 | 34 | 36 | 36 | 37 | 35 | 35 |
| 2002 | 37 | 35 | 35 | 35 | 36 | 36 | 36 | 37 | 37 | 36 | 37 | 34 |
| 2003 | 34 | 36 | 36 | 36 | 34 | 35 | 37 | 37 | 38 | 37 | 38 | 37 |
| 2004 | 37 | 38 | 38 | 38 | 37 | 37 | 38 | 38 | 39 | 38 | 38 | 37 |
| 2005 | 37 | 38 | 38 | 39 | 38 | 38 | 39 | 38 | 33 | 38 | 38 | 36 |
| 2006 | 35 | 35 | 35 | 36 | 36 | 37 | 36 | 36 | 38 | 37 | 36 | 36 |
| 2007 | 34 | 35 | 36 | 35 | 36 | 38 | 38 | 38 | 39 | 39 | 39 | 38 |
| 2008 | 37 | 38 | 38 | 39 | 39 | 39 | 39 | 39 | 33 | 38 | 39 | 38 |
| 2009 | 39 | 38 | 39 | 39 | 40 | 40 | 39 | 39 | 39 | 39 | 40 | 38 |
| 2010 | 39 | 41 | 42 | 41 | 42 | 41 | 42 | 42 | 43 | 44 | 43 | 43 |
| 2011 | 43 | 40 | 45 | 44 | 46 | 46 | 48 | 48 | 48 | 49 | 51 | 48 |
| 2012 | 50 | 51 | 50 | 52 | 55 | 56 | 58 | 59 | 62 | 62 | 64 | 61 |
| 2013 | 63 | 67 | 66 | 67 | 69 | 70 | 74 | 74 | 75 | 75 | 72 | 71 |
| 2014 | 70 | 71 | 73 | 77 | 76 | 81 | 81 | 82 | 86 | 83 | 83 | 85 |
| 2015 | 80 | 87 | 90 | 93 | 91 | 93 | 94 | 93 | 95 | 93 | 89 | 85 |
| 2016 | 84 | 86 | 86 | 86 | 86 | 88 | 86 | 87 | 87 | 86 | 83 | 81 |
| 2017 | 84 | 86 | 89 | 90 | 91 | 95 | 95 | 93 | 94 | 95 | 96 | 94 |
| 2018 | 91 | 94 | 99 | 101 | 105 | 110 | 113 | 114 | 111 | 110 | 110 | 114 |
| 2019 | 110 | 118 | 118 | 120 | 122 | 122 | 125 | 129 | 133 | 130 | 130 | 133 |
| 2020 | 151 | 145 | 148 | 146 | 134 | 144 | 147 | 148 | 146 | 147 | 146 | 140 |
| 2021 | 133 | 103 | 134 | 141 | 140 | 141 | 142 | 141 | 145 | 148 | 144 | 147 |
| 2022 | 124 | 124 | 131 | 136 | 136 | 134 | 139 | 141 | 142 | 142 | 138 | 134 |
| 2023 | 137 | 135 | 140 | 143 | 142 | 143 | 148 | 150 | 162 | 156 | 153 | 152 |
| 2024 | 142 | 150 | 153 | 155 | 161 | 162 | 163 | 166 | 166 | 169 | 165 | 164 |
| 2025 | 157 | 161 | 164 | 165 | 168 | 173 | 174 | 178 | 180 | 176 | 178 | |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 2/6/2026 |
| Next Release Date: 2/27/2026 |