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| Midwest (PADD 2) Ethane-Ethylene Stock Change (Thousand Barrels per Day) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | -33 | -7 | -3 | -2 | 3 | 0 | -4 | 12 | 3 | -2 | -2 | -6 |
| 1982 | -2 | 2 | 8 | 0 | -2 | 8 | -12 | -2 | -10 | 1 | 14 | 11 |
| 1983 | 2 | 0 | -1 | -7 | 3 | 6 | -7 | 1 | -4 | 7 | -7 | -4 |
| 1984 | 3 | -4 | -9 | -28 | 15 | 1 | -13 | 5 | -11 | 13 | -7 | -11 |
| 1985 | -7 | 0 | -9 | -8 | -7 | 15 | -3 | -11 | -20 | 0 | -6 | -6 |
| 1986 | 20 | 9 | -4 | 6 | -5 | 9 | -15 | -9 | 8 | 8 | 10 | 2 |
| 1987 | -22 | 22 | 6 | -3 | 23 | -24 | 2 | 7 | 13 | 11 | 21 | -3 |
| 1988 | -40 | -23 | -1 | -7 | 21 | -1 | 18 | -2 | 22 | 2 | -3 | -10 |
| 1989 | -11 | -12 | 9 | 33 | 21 | -3 | 4 | 0 | -18 | 1 | -9 | -16 |
| 1990 | 8 | 19 | 22 | -2 | -26 | 11 | -12 | 3 | 21 | 9 | 3 | -10 |
| 1991 | -17 | -9 | 17 | 11 | 7 | 4 | -1 | 0 | -17 | 5 | -9 | -14 |
| 1992 | -15 | -11 | 2 | 22 | 16 | 1 | 16 | -10 | -12 | 6 | -15 | -2 |
| 1993 | -4 | -16 | 1 | 2 | -18 | 20 | -28 | 28 | 37 | 2 | -16 | -20 |
| 1994 | -16 | 5 | -23 | 3 | 18 | -13 | -16 | 19 | 1 | 0 | -11 | 3 |
| 1995 | -31 | 16 | -18 | 23 | 20 | 8 | 0 | -18 | -23 | 0 | 6 | -26 |
| 1996 | 28 | -7 | -15 | -6 | 28 | 4 | -4 | -9 | -6 | 7 | 14 | 13 |
| 1997 | -6 | -6 | 7 | -11 | -8 | 29 | -4 | -6 | -10 | 10 | 0 | -12 |
| 1998 | -4 | 21 | -1 | 17 | 7 | 18 | 8 | 8 | 13 | 2 | -21 | -4 |
| 1999 | -26 | -9 | 14 | -25 | 17 | -13 | 2 | 6 | -3 | -6 | 32 | -2 |
| 2000 | -2 | -7 | -11 | 1 | -14 | 5 | 3 | 0 | 15 | -11 | -23 | 18 |
| 2001 | -19 | -11 | 9 | -8 | 3 | -6 | 16 | 8 | 3 | -3 | -14 | -6 |
| 2002 | 23 | 19 | -62 | 25 | 22 | -20 | 27 | -19 | 14 | -20 | -37 | 45 |
| 2003 | -36 | 1 | 17 | -23 | 8 | -9 | 24 | -14 | -8 | 4 | 10 | -4 |
| 2004 | 17 | -20 | -18 | 19 | 0 | -24 | 17 | 15 | 6 | -26 | 27 | 22 |
| 2005 | -4 | 0 | -8 | -29 | 4 | -12 | 8 | 16 | -9 | 15 | -6 | -8 |
| 2006 | 21 | -15 | -3 | 9 | -22 | -7 | -8 | 27 | 5 | 13 | -3 | 15 |
| 2007 | 8 | -5 | 24 | -34 | 5 | -18 | -18 | -25 | 13 | 14 | 15 | 4 |
| 2008 | -24 | 8 | 9 | 13 | 6 | -14 | -22 | -1 | 28 | -8 | 13 | -6 |
| 2009 | -4 | 18 | -2 | 2 | 11 | 2 | 2 | -8 | -1 | -1 | 6 | -27 |
| 2010 | 27 | -13 | -13 | 31 | 33 | 46 | -19 | -23 | -10 | -12 | -27 | 2 |
| 2011 | -8 | -2 | 10 | 16 | 0 | 4 | 9 | 20 | -10 | 5 | -2 | -19 |
| 2012 | -18 | 18 | 20 | 4 | 3 | -14 | -42 | 12 | 15 | 0 | -9 | -13 |
| 2013 | 1 | 38 | ||||||||||
| - = 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 |