View History:    Monthly     Annual   
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Midwest (PADD 2) Isobutane-Isobutylene Stocks at Natural Gas Processing Plants (Thousand Barrels)
Midwest (PADD 2) Isobutane-Isobutylene Stocks at Natural Gas Processing Plants (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1993 118 147 119 106 160 165 104 105 201 134 173 202
  1994 175 156 161 151 135 162 158 151 232 125 129 153
  1995 167 112 130 176 158 166 173 161 298 470 114 138
  1996 114 139 106 130 94 160 159 185 442 157 194 163
  1997 178 180 137 134 146 221 246 162 215 127 143 144
  1998 109 144 130 71 157 190 129 181 261 166 76 111
  1999 82 66 83 99 112 88 88 88 144 109 99 92
  2000 72 81 55 136 116 99 112 118 96 98 62 86
  2001 69 77 92 93 95 138 102 111 59 110 76 80
  2002 108 123 102 81 101 105 152 107 86 47 50 80
  2003 123 99 66 86 59 69 91 89 103 75 52 47
  2004 64 73 80 74 59 61 81 94 93 69 68 55
  2005 62 93 55 66 71 79 93 137 114 143 44 37
  2006 61 53 69 135 91 112 93 92 98 100 92 65
  2007 64 91 72 86 111 117 88 72 90 99 86 74
  2008 75 91 98 112 133 137 179 191 145 74 81 100
  2009 94 89 79 86 77 138 94 108 134 88 93 95
  2010 85 90 116 104 122 141 148 157 152 198 152 118
  2011 106 103 126 120 112 128 149 143 172 151 132 58
  2012 73 68 121 100 121 143 130 112 127 173 93 100
  2013 109 99

- = 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

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