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West Coast (PADD 5) Normal Butane-Butylene Stock Change (Thousand Barrels)
West Coast (PADD 5) Normal Butane-Butylene Stock Change (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 -151 -70 -37 33 20 172 81 15 43 44 17 -276
  1982 -122 -109 14 96 24 40 110 84 71 23 26 -154
  1983 -638 -63 -46 81 -41 185 229 513 22 24 -237 -381
  1984 -654 -146 114 -10 83 61 253 387 86 -95 -399 -69
  1985 -194 -96 149 263 337 571 149 164 72 28 -437 -524
  1986 -74 -576 285 129 26 100 356 244 483 -112 -412 -246
  1987 -987 -219 128 107 92 315 374 283 344 249 -439 -734
  1988 -679 -125 243 263 217 541 324 361 -300 632 -316 -730
  1989 -634 -21 587 411 370 205 569 -167 198 -65 -757 303
  1990 -1,629 -262 74 507 300 212 295 533 432 218 -943 -864
  1991 -283 -315 305 30 138 222 269 275 121 430 -663 -1,097
  1992 -157 -52 188 280 263 497 485 121 228 313 -568 -847
  1993 -570 -109 202 287 497 212 45 675 -93 409 -514 -981
  1994 -791 -243 539 114 16 887 -81 383 351 250 -858 -976
  1995 -246 -114 148 646 90 332 416 263 516 320 -1,125 -632
  1996 -699 -95 142 434 78 458 338 424 134 278 -1,043 -407
  1997 -1,149 -236 388 346 490 39 306 819 452 368 -1,140 -865
  1998 -771 77 604 338 782 -18 201 420 316 -216 -425 -1,425
  1999 -560 -3 506 447 447 -34 384 479 -119 -39 -1,024 -943
  2000 -465 -18 303 802 112 342 -186 710 812 244 -405 -1,372
  2001 -1,338 -267 398 286 588 708 97 370 945 301 -1,036 -1,001
  2002 -1,030 -200 719 288 70 -393 657 294 637 255 -1,084 -1,052
  2003 -451 -64 118 625 70 300 308 125 187 286 -461 -561
  2004 -695 82 275 -210 479 38 -93 518 324 288 -657 -996
  2005 -113 -120 387 -26 316 376 137 224 234 162 -228 -1,301
  2006 -384 66 299 649 317 201 225 436 474 425 -1,120 -1,122
  2007 -655 -178 525 447 373 549 142 903 766 88 -707 -1,130
  2008 -980 -455 853 -51 1,185 590 542

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 9/30/2008
Next Release Date: Last Week of October 2008

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