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Midwest (PADD 2) Normal Butane-Butylene Field Production (Thousand Barrels)
Midwest (PADD 2) Normal Butane-Butylene Field Production (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1981 1,867 1,511 1,607 1,606 1,613 1,470 1,416 1,499 1,389 1,466 1,331 1,526
  1982 1,657 1,450 1,368 1,471 1,370 1,179 1,251 1,324 1,128 1,179 1,429 1,493
  1983 1,572 1,212 1,243 1,129 1,180 1,288 1,153 1,272 1,172 1,328 1,493 1,657
  1984 1,305 1,118 1,073 1,059 1,164 1,117 1,155 1,121 1,074 1,261 1,333 1,388
  1985 1,372 1,231 1,284 1,156 1,133 1,166 1,284 1,209 1,204 1,276 1,270 1,302
  1986 1,458 1,286 1,291 1,046 1,038 1,054 1,097 1,088 1,019 1,115 1,245 1,367
  1987 1,346 1,193 1,155 1,109 1,075 1,001 1,075 1,039 1,040 1,203 1,327 1,380
  1988 1,314 1,186 1,234 1,193 1,227 1,095 1,176 1,155 1,162 1,255 1,201 1,380
  1989 1,300 1,117 1,254 1,250 1,231 1,143 1,172 1,102 1,040 1,111 1,171 1,284
  1990 1,302 1,106 1,144 1,086 1,070 1,032 1,036 1,145 1,125 1,325 1,204 1,211
  1991 1,266 1,108 1,127 1,084 1,114 1,056 1,053 1,075 1,059 1,088 1,187 1,317
  1992 1,234 1,129 1,117 1,029 1,069 1,030 1,024 1,085 1,099 1,150 1,139 1,223
  1993 1,297 1,038 1,120 1,079 1,054 1,081 1,023 1,112 1,014 1,121 1,333 1,350
  1994 1,239 1,014 1,136 1,280 1,364 1,212 1,086 1,047 1,128 1,322 1,361 1,277
  1995 1,270 1,120 1,140 1,211 1,192 1,134 1,197 1,262 1,116 1,275 1,211 1,203
  1996 1,163 985 1,117 1,088 831 804 889 887 1,168 1,063 1,191 1,264
  1997 1,267 1,140 957 854 928 874 1,120 1,277 1,183 1,179 1,034 1,041
  1998 1,156 958 1,157 1,136 1,099 956 1,009 1,032 1,050 1,172 1,160 1,066
  1999 1,105 970 1,061 903 937 933 956 920 945 1,104 968 1,103
  2000 1,097 929 855 982 854 769 892 904 980 1,032 890 915
  2001 841 934 939 809 807 788 804 807 949 936 951 1,068
  2002 1,006 693 885 1,025 1,101 1,062 1,078 1,073 1,041 1,103 1,001 832
  2003 817 769 857 683 705 705 969 948 999 1,154 1,063 1,105
  2004 1,110 1,002 928 937 1,085 1,080 960 908 1,056 1,170 1,027 1,048
  2005 1,110 1,037 1,134 987 905 1,010 914 872 775 763 751 768
  2006 1,037 850 691 728 820 790 948 993 933 1,095 1,059 908
  2007 889 775 821 830 794 930 897 974 734 1,083 1,111 903
  2008 753 918 851 885 908 868 809

- = 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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