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| Refining District Oklahoma-Kansas-Missouri Isobutane-Isobutylene Stocks at Refineries (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1993 | 133 | 147 | 154 | 125 | 120 | 132 | 126 | 124 | 133 | 147 | 138 | 149 |
| 1994 | 174 | 149 | 134 | 127 | 123 | 125 | 143 | 171 | 152 | 159 | 130 | 147 |
| 1995 | 143 | 118 | 127 | 158 | 154 | 200 | 180 | 170 | 141 | 174 | 180 | 212 |
| 1996 | 194 | 148 | 168 | 158 | 162 | 156 | 164 | 189 | 139 | 126 | 101 | 107 |
| 1997 | 125 | 110 | 141 | 196 | 211 | 210 | 216 | 161 | 163 | 113 | 124 | 147 |
| 1998 | 108 | 127 | 113 | 174 | 182 | 139 | 163 | 154 | 169 | 229 | 194 | 176 |
| 1999 | 215 | 156 | 144 | 158 | 133 | 189 | 208 | 169 | 143 | 151 | 191 | 225 |
| 2000 | 276 | 207 | 174 | 152 | 162 | 144 | 140 | 176 | 105 | 129 | 194 | 190 |
| 2001 | 196 | 176 | 166 | 152 | 155 | 155 | 140 | 130 | 150 | 104 | 108 | 136 |
| 2002 | 126 | 239 | 180 | 207 | 244 | 193 | 194 | 182 | 232 | 211 | 201 | 142 |
| 2003 | 174 | 209 | 176 | 166 | 150 | 197 | 194 | 225 | 198 | 183 | 234 | 222 |
| 2004 | 204 | 219 | 228 | 332 | 275 | 279 | 301 | 252 | 251 | 218 | 262 | 293 |
| 2005 | 199 | 204 | 229 | 215 | 166 | 144 | 151 | 170 | 146 | 171 | 163 | 184 |
| 2006 | 196 | 240 | 229 | 224 | 184 | 138 | 167 | 276 | 282 | 298 | 309 | 366 |
| 2007 | 359 | 365 | 396 | 426 | 445 | 532 | 558 | 594 | 603 | 661 | 527 | 451 |
| 2008 | 394 | 313 | 273 | 243 | 273 | 295 | 249 | 194 | 194 | 215 | 223 | 200 |
| 2009 | 223 | 247 | 247 | 240 | 225 | 199 | 215 | 202 | 233 | 211 | 214 | 222 |
| 2010 | 219 | 221 | 208 | 183 | 182 | 168 | 159 | 167 | 222 | 222 | 237 | 235 |
| 2011 | 229 | 223 | 211 | 203 | 189 | 191 | 161 | 153 | 147 | 147 | 164 | 184 |
| 2012 | 140 | 131 | 142 | 140 | 135 | 133 | 130 | 125 | 125 | 140 | 145 | 124 |
| 2013 | 123 | 100 | ||||||||||
| - = 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 |