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| U.S. Gas Plant Production of Normal Butane-Butylene (Thousand Barrels per Day) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | 226 | 214 | 215 | 222 | 219 | 218 | 221 | 219 | 231 | 247 | 226 | 203 |
| 1982 | 222 | 219 | 215 | 219 | 232 | 218 | 189 | 211 | 208 | 207 | 194 | 209 |
| 1983 | 213 | 224 | 208 | 216 | 203 | 218 | 214 | 204 | 226 | 214 | 218 | 211 |
| 1984 | 198 | 203 | 198 | 200 | 204 | 200 | 206 | 207 | 198 | 206 | 208 | 209 |
| 1985 | 197 | 199 | 173 | 169 | 169 | 168 | 163 | 190 | 146 | 153 | 158 | 170 |
| 1986 | 199 | 193 | 179 | 153 | 154 | 146 | 140 | 138 | 137 | 131 | 146 | 164 |
| 1987 | 159 | 186 | 181 | 139 | 157 | 148 | 148 | 149 | 148 | 144 | 158 | 175 |
| 1988 | 172 | 179 | 171 | 151 | 169 | 168 | 164 | 167 | 162 | 169 | 166 | 171 |
| 1989 | 172 | 152 | 153 | 151 | 149 | 149 | 158 | 147 | 147 | 142 | 141 | 147 |
| 1990 | 168 | 149 | 142 | 138 | 141 | 128 | 127 | 138 | 140 | 156 | 183 | 174 |
| 1991 | 171 | 161 | 166 | 154 | 136 | 138 | 136 | 133 | 136 | 145 | 168 | 158 |
| 1992 | 151 | 146 | 138 | 152 | 142 | 143 | 139 | 126 | 111 | 126 | 129 | 143 |
| 1993 | 161 | 164 | 143 | 125 | 106 | 111 | 129 | 142 | 143 | 165 | 166 | 147 |
| 1994 | 128 | 118 | 133 | 141 | 143 | 132 | 125 | 109 | 127 | 150 | 158 | 167 |
| 1995 | 143 | 166 | 166 | 124 | 122 | 136 | 146 | 170 | 149 | 158 | 164 | 167 |
| 1996 | 151 | 156 | 148 | 138 | 128 | 123 | 134 | 139 | 157 | 170 | 170 | 190 |
| 1997 | 165 | 158 | 143 | 114 | 148 | 139 | 139 | 147 | 147 | 143 | 150 | 132 |
| 1998 | 155 | 159 | 159 | 149 | 159 | 132 | 125 | 140 | 137 | 153 | 158 | 153 |
| 1999 | 154 | 142 | 155 | 147 | 145 | 151 | 155 | 157 | 156 | 165 | 171 | 164 |
| 2000 | 171 | 164 | 171 | 172 | 159 | 143 | 148 | 161 | 162 | 168 | 161 | 139 |
| 2001 | 129 | 135 | 134 | 126 | 112 | 128 | 127 | 131 | 145 | 137 | 143 | 144 |
| 2002 | 138 | 143 | 137 | 136 | 132 | 138 | 136 | 119 | 136 | 114 | 113 | 129 |
| 2003 | 132 | 132 | 130 | 102 | 113 | 131 | 121 | 121 | 125 | 150 | 154 | 143 |
| 2004 | 155 | 151 | 142 | 138 | 144 | 146 | 144 | 158 | 154 | 161 | 161 | 166 |
| 2005 | 169 | 172 | 174 | 165 | 142 | 137 | 101 | 106 | 103 | 101 | 121 | 119 |
| 2006 | 141 | 134 | 115 | 132 | 131 | 134 | 136 | 130 | 136 | 148 | 139 | 156 |
| 2007 | 128 | 110 | 127 | 110 | 124 | 136 | 127 | 132 | 114 | 143 | 152 | 135 |
| 2008 | 121 | 135 | 117 | 144 | 143 | 141 | 147 | 139 | 135 | 129 | 127 | 128 |
| 2009 | 123 | 140 | 154 | 140 | 133 | 125 | 120 | 129 | 139 | 133 | 144 | 149 |
| 2010 | 165 | 169 | 166 | 155 | 145 | 134 | 136 | 146 | 159 | 163 | 169 | 157 |
| 2011 | 157 | 152 | 149 | 153 | 153 | 157 | 163 | 160 | 154 | 161 | 166 | 162 |
| 2012 | 181 | 186 | 186 | 169 | 183 | 176 | 160 | 161 | 178 | 192 | 187 | 194 |
| 2013 | 185 | 209 | ||||||||||
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 4/29/2013 |
| Next Release Date: Last Week of May 2013 |