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| Midwest (PADD 2) Refinery and Blender Net Input of Normal Butane-Butylene (Thousand Barrels per Day) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | 106 | 75 | 41 | 47 | 24 | 38 | 37 | 43 | 57 | 68 | 97 | 114 |
| 1982 | 96 | 85 | 60 | 46 | 40 | 39 | 40 | 41 | 52 | 64 | 90 | 105 |
| 1983 | 91 | 61 | 42 | 37 | 37 | 52 | 36 | 34 | 46 | 64 | 99 | 109 |
| 1984 | 97 | 72 | 60 | 42 | 31 | 43 | 39 | 42 | 50 | 77 | 90 | 96 |
| 1985 | 83 | 77 | 54 | 40 | 30 | 23 | 27 | 34 | 48 | 60 | 89 | 93 |
| 1986 | 77 | 63 | 46 | 32 | 28 | 23 | 22 | 25 | 33 | 54 | 84 | 94 |
| 1987 | 88 | 64 | 53 | 36 | 32 | 22 | 21 | 24 | 30 | 45 | 69 | 80 |
| 1988 | 68 | 68 | 43 | 30 | 19 | 15 | 15 | 18 | 26 | 57 | 82 | 91 |
| 1989 | 79 | 56 | 38 | 12 | 5 | 6 | 4 | 5 | 19 | 61 | 83 | 89 |
| 1990 | 90 | 57 | 10 | 6 | 4 | 4 | 5 | 5 | 27 | 64 | 80 | 86 |
| 1991 | 82 | 69 | 20 | 6 | 6 | 7 | 8 | 9 | 31 | 63 | 93 | 109 |
| 1992 | 94 | 51 | 12 | 8 | 5 | 6 | 5 | 6 | 26 | 73 | 94 | 117 |
| 1993 | 98 | 57 | 12 | 10 | 7 | 3 | 2 | 5 | 15 | 52 | 87 | 91 |
| 1994 | 63 | 58 | 18 | 4 | 3 | 5 | 4 | 4 | 17 | 50 | 72 | 88 |
| 1995 | 74 | 53 | 19 | 4 | 3 | 3 | 2 | 3 | 21 | 43 | 81 | 96 |
| 1996 | 83 | 62 | 23 | 4 | 3 | 3 | 4 | 5 | 16 | 47 | 50 | 70 |
| 1997 | 65 | 72 | 31 | 5 | 6 | 4 | 1 | 5 | 21 | 45 | 66 | 64 |
| 1998 | 74 | 56 | 29 | 7 | 2 | 4 | 5 | 7 | 16 | 53 | 76 | 72 |
| 1999 | 64 | 46 | 26 | 8 | 5 | 4 | 5 | 3 | 23 | 47 | 65 | 81 |
| 2000 | 70 | 45 | 28 | 7 | 3 | 5 | 4 | 5 | 18 | 42 | 67 | 62 |
| 2001 | 71 | 51 | 21 | 4 | 6 | 4 | 3 | 3 | 17 | 49 | 69 | 73 |
| 2002 | 83 | 59 | 22 | 4 | 3 | 3 | 2 | 4 | 12 | 45 | 81 | 86 |
| 2003 | 81 | 61 | 23 | 3 | 2 | 3 | 3 | 6 | 6 | 32 | 57 | 53 |
| 2004 | 54 | 42 | 20 | 2 | 2 | 2 | 2 | 1 | 9 | 32 | 53 | 72 |
| 2005 | 56 | 44 | 20 | 6 | 3 | 2 | 2 | 3 | 30 | 60 | 67 | 83 |
| 2006 | 72 | 47 | 21 | 10 | 6 | 5 | 3 | 5 | 20 | 38 | 66 | 80 |
| 2007 | 65 | 39 | 18 | 8 | 1 | 2 | 3 | 3 | 17 | 32 | 58 | 59 |
| 2008 | 57 | 45 | 14 | 9 | 1 | 1 | 2 | 1 | 21 | 43 | 55 | 59 |
| 2009 | 54 | 46 | 21 | 8 | 1 | 1 | 1 | 1 | 21 | 49 | 71 | 64 |
| 2010 | 59 | 44 | 24 | 13 | 2 | 1 | 1 | 1 | 17 | 40 | 57 | 61 |
| 2011 | 56 | 41 | 23 | 11 | 2 | 1 | 2 | 0 | 15 | 31 | 46 | 58 |
| 2012 | 48 | 40 | 19 | 12 | 2 | 2 | 1 | 1 | 21 | 58 | 67 | 68 |
| 2013 | 54 | 39 | 21 | |||||||||
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 5/30/2013 |
| Next Release Date: Last Week of June 2013 |