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| Rocky Mountain (PADD 4) Product Supplied of Isobutane-Isobutylene (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1989 | 26 | 14 | 27 | 28 | -17 | -150 | -188 | -78 | -35 | -50 | -21 | 11 |
| 1990 | 13 | 15 | 41 | -77 | -74 | -31 | -21 | -53 | -27 | -97 | 13 | 13 |
| 1991 | -17 | -41 | -78 | 25 | 70 | -23 | -18 | -10 | -19 | 67 | 27 | 80 |
| 1992 | 52 | 19 | 40 | 44 | 7 | 87 | -48 | 6 | -42 | -22 | 109 | 55 |
| 1993 | 40 | 8 | -19 | -23 | -35 | -93 | 34 | -7 | 51 | -20 | 14 | |
| 1994 | 6 | -13 | -29 | 18 | -38 | -89 | -102 | -100 | -125 | -52 | -4 | -10 |
| 1995 | 18 | -24 | -14 | -88 | -87 | -113 | -85 | -119 | -143 | -96 | -34 | -82 |
| 1996 | -66 | -31 | -121 | -161 | -113 | -56 | -119 | -219 | -154 | -92 | -95 | -86 |
| 1997 | -66 | -54 | -146 | -163 | -110 | -184 | -168 | -193 | -162 | -101 | -60 | -102 |
| 1998 | -139 | -112 | -149 | -138 | -201 | -210 | -235 | -202 | -146 | -142 | -82 | -134 |
| 1999 | -85 | -78 | -164 | -173 | -222 | -222 | -160 | -185 | -181 | -77 | -50 | -161 |
| 2000 | -26 | -78 | -98 | -83 | -260 | -214 | -225 | -195 | -194 | -221 | -142 | -67 |
| 2001 | -108 | -102 | -57 | -134 | -127 | -230 | -213 | -209 | -164 | -122 | -137 | -153 |
| 2002 | -148 | -135 | -219 | -163 | -221 | -261 | -342 | -268 | -209 | -159 | -168 | -172 |
| 2003 | -176 | -32 | -148 | -78 | -293 | -271 | -276 | -225 | -265 | -165 | -179 | -137 |
| 2004 | -123 | -110 | -178 | -89 | -209 | -279 | -263 | -294 | -281 | -191 | -179 | -162 |
| 2005 | -157 | -152 | -234 | -200 | -290 | -254 | -251 | -331 | -188 | -207 | -187 | -105 |
| 2006 | -221 | -135 | -292 | -354 | -331 | -331 | -308 | -316 | -316 | -329 | -279 | -231 |
| 2007 | -231 | -245 | -281 | -334 | -429 | -374 | -356 | -366 | -361 | -326 | -323 | -247 |
| 2008 | -304 | -275 | -356 | -345 | -312 | -378 | -212 | -358 | -336 | -314 | -325 | -228 |
| 2009 | -401 | -309 | -386 | -365 | -445 | -391 | -488 | -460 | -501 | -418 | -387 | -402 |
| 2010 | -405 | -435 | -350 | -478 | -571 | -408 | -468 | -488 | -445 | -522 | -476 | -344 |
| 2011 | -326 | -281 | -438 | -358 | -486 | -413 | -407 | -409 | -410 | -440 | -392 | -313 |
| 2012 | -386 | -381 | -461 | -438 | -519 | -519 | -499 | -454 | -368 | -339 | -310 | -183 |
| 2013 | -253 | -367 | ||||||||||
| - = 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 |