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U.S. Refinery and Blender Net Production of Liquefied Petroleum Gases - Isobutane/Isobutylene (Thousand Barrels)
U.S. Refinery and Blender Net Production of Liquefied Petroleum Gases - Isobutane/Isobutylene (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 116 88 81 120 117 114 94 114 24 0 4 32
  1982 7 6 1 -9 2 -12 -19 -22 -23 112 -29 16
  1983 18 1 23 20 65 13 93 -3 5 51 67 47
  1984 -7 -8 -27 -26 -18 -18 -13 -46 -25 85 100 57
  1985 -39 -52 -12 -53 15 -42 51 2 -26 -91 -2 12
  1986 336 17 217 -174 208 294 221 107 320 35 146 -7
  1987 280 339 274 213 245 370 299 473 484 424 299 227
  1988 251 225 606 477 562 454 580 406 482 319 269 164
  1989 447 193 445 508 627 459 495 395 469 451 291 111
  1990 225 355 319 305 417 255 490 386 547 309 127 287
  1991 228 136 286 37 194 122 277 310 111 -221 61 63
  1992 144 467 470 490 554 191 294 361 288 408 75 -53
  1993 221 303 382 341 744 474 482 542 312 173 246 333
  1994 418 281 494 258 247 543 652 824 176 182 220 414
  1995 -111 60 639 600 306 434 800 613 273 571 335 87
  1996 288 245 514 409 218 807 458 321 646 343 -119 -72
  1997 353 128 147 503 593 354 597 372 553 285 99 215
  1998 348 195 314 842 322 706 626 348 312 243 -61 131
  1999 271 350 18 629 542 390 788 -22 214 25 -222 -40
  2000 -12 54 108 219 285 469 681 332 41 139 -138 -63
  2001 202 93 83 76 427 -41 -34 131 18 -385 -601 -596
  2002 -317 30 159 -7 90 153 256 18 167 -642 -637 -162
  2003 -589 -113 -318 -308 -605 125 -459 -432 13 -364 -211 -350
  2004 -509 -595 -681 -272 -692 -759 -775 -623 -492 -749 -428 -408
  2005 -567 -870 -1,193 -905 -1,322 -1,264 -1,012 -909 -1,013 -881 -322 -823
  2006 10 -17 -52 -160 428 -312 -102 132 -77 -29 -169 36
  2007 371 647 447 61 360 80 385 77 123 83 -228 -289
  2008 11 87 553 490 245 225 -21 142 331 -71

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 12/29/2008
Next Release Date: Last Week of January 2009

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