View History:    Monthly     Annual   
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U.S. Product Supplied of Isobutane-Isobutylene (Thousand Barrels)
U.S. Product Supplied of Isobutane-Isobutylene (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 215 -11 148 45 112 121 90 128 21 2 2 294
  1982 8 2 0 -5 1 -14 -70 -26 -14 112 -30 20
  1983 18 3 6 20 8 29 22 23 43 3 59 55
  1984 1,225 -266 415 419 -81 -739 17 67 -197 -62 1,081 851
  1985 1,379 1,377 879 1,045 598 309 524 -580 262 343 1,363 1,347
  1986 1,800 1,349 1,667 -34 1,030 866 1,901 555 1,019 1,283 1,377 2,017
  1987 1,540 2,420 1,342 1,172 61 2,693 1,478 1,119 860 1,792 1,976 1,869
  1988 2,925 1,972 1,689 1,223 1,362 585 952 872 1,179 1,819 1,670 2,073
  1989 1,305 998 765 1,037 965 676 438 778 42 1,369 503 287
  1990 982 530 869 598 -101 533 1,194 627 207 644 -103 943
  1991 1,476 927 990 886 1,004 356 1,490 385 1,181 1,248 1,487 1,422
  1992 -912 3,433 729 992 813 1,306 821 514 613 1,624 1,880 1,378
  1993 1,169 1,225 1,284 1,580 838 1,724 940 1,852 1,161 2,001 2,098 1,831
  1994 1,792 1,525 2,294 2,146 1,497 1,713 3,229 2,489 1,877 2,316 2,743 2,360
  1995 2,343 2,086 1,211 2,415 2,185 2,348 1,710 1,858 2,527 1,731 2,661 1,590
  1996 2,162 1,878 2,432 1,914 3,029 2,829 2,297 2,456 3,244 2,461 2,809 1,657
  1997 2,482 3,129 2,994 2,537 2,146 2,493 2,373 2,830 2,934 3,563 2,908 3,396
  1998 2,759 2,837 2,086 3,352 2,450 3,052 3,363 2,109 2,908 3,298 2,513 2,836
  1999 2,806 2,964 2,326 2,260 2,757 3,113 3,525 2,547 2,984 2,896 3,087 3,333
  2000 3,439 3,341 2,953 2,944 3,090 3,181 3,138 3,016 2,691 3,613 3,085 2,563
  2001 2,352 2,607 2,447 2,927 2,489 3,319 2,749 2,740 2,791 3,326 2,668 2,856
  2002 2,013 1,643 2,765 1,863 2,919 2,861 2,470 2,795 2,256 2,182 2,658 2,788
  2003 2,330 2,598 2,662 2,747 1,402 1,159 1,991 2,003 2,084 933 3,014 2,952
  2004 1,477 1,826 513 1,217 868 585 161 493 220 1,908 745 935
  2005 796 303 787 253 718 1,074 1,324 887 1,172 944 1,323 1,547
  2006 935 982 291 75 -78 564 1,270 185 999 113 -199 257
  2007 661 778 546 -587 -560 352 -79 85 -504 -116 350 898
  2008 451 747 162 2 -482 -120 -199 114 13 291 983 -619
  2009 625 453 648 95 141 513 593 220 299 -50 827 141
  2010 740 626 1,315 752 234 813 860 694 163 627 1,506 1,019
  2011 1,133 1,496 1,123 934 801 776 924 1,365 864 882 627 1,471
  2012 1,136 1,399 1,242 1,335 1,158 655 895 1,597 942 1,071 1,294 2,159
  2013 2,248 1,613 1,477 1,527 1,591 2,142 2,041 2,035 662 2,521 2,050 1,885
  2014 1,602 1,434 1,687 2,162 2,079 1,364 1,733 1,856 2,119 2,221 2,207 2,192
  2015 2,619 2,325 2,531 2,822 2,894 2,866 2,967 3,271 2,616 3,541 3,112 3,711
  2016 4,413 3,280 3,972 4,379 5,014 4,482 4,428 3,918 4,047 2,814 2,922 3,412
  2017 3,502 3,118 4,261 4,554 4,575 5,088 5,176 3,841 3,044 4,141 4,980 4,988
  2018 4,858 4,055 4,099 3,375 5,429 5,086 5,201 5,620 4,808 5,291 4,872 5,380
  2019 5,147 5,200 5,319 5,061 5,862 5,990 5,985 6,127 6,162 6,230 5,492 5,794
  2020 6,961 5,428 6,777 6,080 6,512 6,912 6,529 5,986 5,901 6,741 7,669 6,579
  2021 7,912 4,418 6,454 6,673 7,399 6,732 6,483 7,033 7,079 6,176 6,095 8,180
  2022 -- -- -- -- -- -- -- -- -- -- -- --
  2023 -- -- --

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 5/31/2023
Next Release Date: 6/30/2023

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