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Download Data (XLS File) |
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| Midwest (PADD 2) Isobutane-Isobutylene Stock Change (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | 221 | -91 | -215 | 133 | -181 | 20 | 11 | -267 | 144 | -447 | -91 | 50 |
| 1982 | 347 | 101 | 131 | -107 | -397 | -180 | -101 | 215 | -55 | 485 | 158 | -94 |
| 1983 | 159 | -365 | -37 | 249 | 104 | 123 | 424 | -296 | 195 | -298 | -252 | -305 |
| 1984 | -49 | 185 | 11 | -41 | -69 | -54 | -224 | -59 | 145 | -24 | -21 | 46 |
| 1985 | 74 | -116 | -508 | 70 | 47 | -128 | -109 | -34 | -78 | 134 | 346 | 99 |
| 1986 | -34 | -115 | -177 | 365 | -111 | 102 | -84 | -92 | 211 | 38 | 287 | -286 |
| 1987 | -201 | -159 | -35 | -255 | 158 | 156 | 219 | 5 | 185 | 195 | 171 | 158 |
| 1988 | -238 | -264 | -65 | 386 | -292 | -98 | 409 | -77 | 98 | -46 | 61 | -241 |
| 1989 | -135 | -271 | 47 | -70 | 293 | 151 | 108 | 208 | 36 | -22 | 221 | -433 |
| 1990 | -20 | -294 | 5 | 117 | 466 | 161 | 116 | -170 | 366 | -542 | 138 | -267 |
| 1991 | -112 | -77 | 363 | -389 | -163 | 137 | 110 | -28 | 289 | 48 | -81 | -64 |
| 1992 | -46 | 158 | 56 | 116 | -130 | -33 | -120 | -193 | 426 | 171 | -12 | -110 |
| 1993 | -299 | 57 | 302 | 371 | -156 | -33 | 186 | 109 | 221 | -387 | -519 | -171 |
| 1994 | 107 | 220 | 295 | -327 | -380 | -144 | 479 | 675 | -17 | -690 | -783 | -4 |
| 1995 | -140 | 25 | 264 | 89 | 87 | 225 | -83 | 544 | 236 | -119 | -847 | -19 |
| 1996 | -395 | -145 | 49 | 126 | 281 | -41 | 303 | 195 | -156 | -205 | -34 | -142 |
| 1997 | -221 | -271 | -82 | 383 | 416 | 219 | -76 | -21 | 85 | -352 | -72 | -20 |
| 1998 | -307 | 471 | -30 | 91 | -170 | 181 | -28 | 506 | 164 | -795 | -248 | -92 |
| 1999 | -58 | -151 | -140 | 57 | 235 | 69 | 174 | 12 | -112 | -85 | 80 | -202 |
| 2000 | -25 | -157 | 165 | 69 | -52 | 66 | 171 | 262 | -67 | -128 | -145 | 5 |
| 2001 | -238 | -184 | 65 | 161 | 72 | 84 | 226 | 18 | 2 | -288 | -239 | -20 |
| 2002 | 83 | 45 | -120 | 107 | 293 | -6 | -5 | 259 | -1 | -186 | -209 | -87 |
| 2003 | 247 | -115 | 44 | -249 | -115 | 388 | 135 | 25 | 128 | -36 | -3 | -402 |
| 2004 | -100 | -91 | 485 | -7 | -23 | 68 | 102 | 145 | 430 | -976 | 74 | -13 |
| 2005 | -110 | 63 | 169 | -118 | 92 | 47 | 145 | 105 | -220 | -64 | -174 | 151 |
| 2006 | -81 | -17 | 121 | 219 | 14 | 152 | 100 | 126 | 28 | 25 | -43 | -195 |
| 2007 | -288 | 135 | 141 | 47 | 215 | 228 | 265 | -75 | 151 | -88 | -387 | -363 |
| 2008 | -170 | -267 | 172 | 2 | -17 | 157 | 267 | 101 | -141 | -94 | 80 | -202 |
| 2009 | 18 | -160 | -205 | 73 | -32 | -60 | 134 | -5 | 122 | -90 | 108 | -233 |
| 2010 | 85 | 296 | 112 | -189 | 112 | -206 | -115 | -132 | -22 | 458 | 181 | -408 |
| 2011 | -299 | 23 | 202 | 10 | 91 | -75 | -334 | -78 | 116 | 191 | 10 | 211 |
| 2012 | 29 | 343 | 64 | -156 | 185 | -298 | -372 | -43 | -50 | 493 | 89 | 3 |
| 2013 | -75 | -55 | ||||||||||
| - = 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 |