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| Refining District Minnesota-Wisconsin-North Dakota-South Dakota Refinery Net Production of Isobutane (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2005 | 2 | 4 | -15 | -6 | -30 | -35 | -25 | -25 | -24 | -35 | 6 | -2 |
| 2006 | -1 | 7 | -7 | -27 | 2 | 8 | 10 | 9 | 9 | 3 | -28 | -23 |
| 2007 | -29 | -11 | 32 | 46 | -12 | 4 | -5 | -21 | 5 | 9 | -4 | -3 |
| 2008 | -6 | -13 | -2 | 4 | -6 | -11 | -12 | -8 | 4 | -8 | 8 | 6 |
| 2009 | 5 | 21 | -12 | 23 | -10 | -2 | -1 | 9 | 0 | -13 | -3 | 7 |
| 2010 | -3 | 8 | -10 | -40 | 7 | -17 | 20 | -7 | -33 | -10 | 1 | -13 |
| 2011 | -18 | 4 | -12 | -47 | -10 | 9 | 9 | 1 | -23 | 17 | 8 | -1 |
| 2012 | -4 | 1 | -4 | 8 | -1 | -11 | 1 | -5 | -12 | -4 | -14 | -7 |
| 2013 | -1 | 5 | ||||||||||
| - = 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 |