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| Midwest (PADD 2) Refinery and Blender Net Production of Normal Butane-Butylene (Thousand Barrels per Day) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | 4 | 3 | 4 | 6 | 3 | 0 | 0 | -4 | -3 | -6 | -7 | 1 |
| 1982 | -6 | -4 | -5 | -3 | -3 | -3 | -2 | -1 | -4 | 0 | -5 | 0 |
| 1983 | -2 | -2 | 0 | 0 | 1 | -3 | -3 | -2 | -4 | -4 | -2 | -4 |
| 1984 | -7 | -7 | 1 | -2 | -4 | -5 | -2 | -2 | -6 | -7 | 2 | -1 |
| 1985 | -1 | -5 | -4 | -6 | -3 | -2 | -2 | 1 | 0 | 0 | -7 | -2 |
| 1986 | -3 | -1 | 0 | -2 | 2 | 1 | 3 | 1 | 1 | -3 | -3 | -7 |
| 1987 | -6 | -6 | -2 | 2 | 0 | 1 | 0 | -1 | -3 | -4 | -7 | -8 |
| 1988 | 1 | -6 | -3 | -1 | 3 | 1 | 2 | 2 | -3 | -4 | -8 | -6 |
| 1989 | -8 | -7 | -7 | 3 | 10 | 13 | 11 | 13 | 0 | 1 | -2 | -7 |
| 1990 | -2 | -2 | 11 | 11 | 12 | 12 | 9 | 15 | -2 | -16 | -20 | -13 |
| 1991 | -1 | 1 | 8 | 12 | 19 | 20 | 14 | 15 | 6 | -6 | -6 | -6 |
| 1992 | -16 | 0 | 23 | 32 | 36 | 36 | 39 | 35 | 15 | 2 | -15 | -1 |
| 1993 | -13 | -3 | 19 | 34 | 34 | 34 | 33 | 30 | 7 | -8 | -11 | 0 |
| 1994 | -11 | -4 | 15 | 37 | 24 | 34 | 32 | 31 | 7 | -5 | -12 | -6 |
| 1995 | -12 | -7 | 22 | 46 | 41 | 42 | 36 | 40 | 17 | -19 | -10 | -19 |
| 1996 | -16 | -6 | 15 | 38 | 41 | 40 | 34 | 37 | 7 | -17 | -29 | -15 |
| 1997 | -22 | -7 | 6 | 31 | 37 | 48 | 35 | 42 | -1 | -28 | -38 | -38 |
| 1998 | -27 | -13 | -1 | 34 | 42 | 38 | 36 | 34 | 4 | -11 | -18 | -35 |
| 1999 | -28 | -17 | 9 | 44 | 49 | 44 | 43 | 45 | 6 | -24 | -40 | -43 |
| 2000 | -29 | -18 | 8 | 38 | 59 | 56 | 51 | 43 | 2 | -27 | -37 | -25 |
| 2001 | -21 | -18 | -1 | 43 | 58 | 53 | 62 | 49 | 2 | -26 | -45 | -47 |
| 2002 | -35 | -22 | -2 | 42 | 58 | 49 | 56 | 47 | 7 | -23 | -44 | -39 |
| 2003 | -30 | -22 | 10 | 36 | 51 | 48 | 50 | 47 | 4 | -23 | -53 | -51 |
| 2004 | -46 | -37 | -8 | 38 | 56 | 49 | 47 | 48 | 13 | -40 | -50 | -56 |
| 2005 | -55 | -21 | -5 | 44 | 46 | 62 | 62 | 52 | -18 | -51 | -55 | -43 |
| 2006 | -34 | -19 | 8 | 67 | 78 | 82 | 71 | 74 | 15 | -1 | -27 | -48 |
| 2007 | -39 | -27 | 17 | 74 | 83 | 84 | 77 | 74 | 23 | -22 | -44 | -63 |
| 2008 | -36 | -28 | 11 | 67 | 80 | 81 | 72 | 71 | 18 | -23 | -61 | -57 |
| 2009 | -53 | -32 | 4 | 56 | 76 | 74 | 72 | 67 | 10 | -42 | -73 | -71 |
| 2010 | -65 | -41 | 13 | 57 | 82 | 77 | 79 | 75 | -3 | -41 | -67 | -62 |
| 2011 | -69 | -50 | 7 | 68 | 72 | 79 | 82 | 72 | 12 | -30 | -77 | -85 |
| 2012 | -69 | -42 | 23 | 77 | 83 | 78 | 75 | 73 | 13 | -34 | -67 | -74 |
| 2013 | -66 | -46 | ||||||||||
| - = 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 |