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| Midwest (PADD 2) Imports of Isobutane-Isobutylene (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1984 | 426 | 351 | 312 | 209 | 210 | 246 | 171 | 213 | 271 | 436 | 611 | 474 |
| 1985 | 390 | 344 | 468 | 256 | 268 | 283 | 195 | 238 | 351 | 395 | 451 | 583 |
| 1986 | 470 | 339 | 297 | 256 | 283 | 166 | 347 | 273 | 237 | 333 | 626 | 339 |
| 1987 | 555 | 383 | 340 | 332 | 293 | 318 | 332 | 209 | 342 | 399 | 605 | 524 |
| 1988 | 373 | 406 | 364 | 299 | 195 | 224 | 265 | 279 | 231 | 349 | 515 | 414 |
| 1989 | 116 | 107 | 94 | 44 | 32 | 82 | 86 | 59 | 85 | 102 | 87 | 57 |
| 1990 | 280 | 209 | 31 | 24 | 14 | 6 | 6 | 3 | 4 | 5 | 12 | 172 |
| 1991 | 217 | 133 | 178 | 93 | 292 | 44 | 191 | 40 | 46 | 32 | 58 | 36 |
| 1992 | 70 | 139 | 78 | 40 | 84 | 88 | 76 | 97 | 43 | 50 | 67 | 45 |
| 1993 | 115 | 80 | 123 | 334 | 144 | 141 | 150 | 152 | 248 | 200 | 171 | 243 |
| 1994 | 70 | 139 | 179 | 242 | 151 | 75 | 294 | 298 | 103 | 220 | 6 | 69 |
| 1995 | 171 | 105 | 50 | 222 | 239 | 207 | 336 | 313 | 139 | 14 | 11 | 13 |
| 1996 | 119 | 47 | 22 | 29 | 81 | 11 | 142 | 104 | 295 | 55 | 277 | |
| 1997 | 147 | 319 | 124 | 154 | 229 | 264 | 269 | 258 | 216 | 167 | 207 | 250 |
| 1998 | 398 | 215 | 253 | 219 | 274 | 123 | 137 | 266 | 152 | 269 | 104 | 175 |
| 1999 | 237 | 186 | 156 | 59 | 192 | 300 | 342 | 68 | 268 | 352 | 313 | 332 |
| 2000 | 354 | 334 | 268 | 393 | 431 | 374 | 422 | 232 | 129 | 116 | 139 | 60 |
| 2001 | 25 | 11 | 64 | 22 | 51 | 35 | 6 | 9 | 30 | 5 | 7 | 7 |
| 2002 | 9 | 4 | 4 | 9 | 8 | 21 | 12 | 7 | 14 | 15 | 19 | |
| 2003 | 18 | 11 | 20 | 12 | 26 | 19 | 42 | 91 | 49 | 36 | 17 | 10 |
| 2004 | 1 | 61 | 74 | 51 | 18 | 58 | 138 | 269 | 84 | 89 | 98 | 126 |
| 2005 | 112 | 134 | 133 | 57 | 81 | 191 | 137 | 96 | 255 | 230 | 170 | 89 |
| 2006 | 145 | 115 | 142 | 150 | 141 | 114 | 174 | 191 | 80 | 127 | 158 | 179 |
| 2007 | 140 | 128 | 198 | 132 | 99 | 188 | 182 | 223 | 67 | 92 | 96 | 132 |
| 2008 | 179 | 166 | 194 | 80 | 133 | 165 | 172 | 61 | 124 | 133 | 159 | 72 |
| 2009 | 250 | 209 | 179 | 182 | 151 | 188 | 187 | 222 | 177 | 179 | 246 | 245 |
| 2010 | 156 | 128 | 126 | 81 | 78 | 114 | 128 | 160 | 231 | 160 | 129 | 136 |
| 2011 | 173 | 131 | 271 | 161 | 120 | 92 | 131 | 204 | 144 | 115 | 123 | 82 |
| 2012 | 84 | 127 | 176 | 122 | 245 | 254 | 423 | 588 | 450 | 416 | 86 | 110 |
| 2013 | 152 | 158 | ||||||||||
| - = 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 |