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| Rocky Mountain (PADD 4) Ethane-Ethylene Stock Change (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | -2 | 0 | 0 | 0 |
| 1982 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1983 | 0 | 0 | 5 | -3 | -2 | 0 | 0 | -1 | 1 | 0 | 0 | 0 |
| 1984 | -1 | -2 | -3 | -3 | -3 | -1 | 1 | 1 | -2 | 8 | -5 | 2 |
| 1985 | 0 | 2 | -1 | -2 | -4 | -2 | -2 | 9 | 2 | 4 | 0 | 0 |
| 1986 | 1 | -4 | 4 | -4 | -2 | -1 | 46 | -51 | 2 | -1 | 3 | -2 |
| 1987 | 3 | -3 | 2 | -1 | 0 | -4 | -6 | 1 | 0 | 0 | 4 | 1 |
| 1988 | 9 | 4 | -4 | -6 | -2 | -7 | 2 | 2 | 2 | 4 | 4 | 10 |
| 1989 | 5 | -1 | -5 | -4 | -2 | -6 | 4 | -3 | -3 | -1 | -1 | 5 |
| 1990 | 2 | -3 | 3 | 9 | -5 | -1 | -6 | 6 | 7 | 24 | 2 | 2 |
| 1991 | 5 | -6 | -1 | -3 | 1 | 1 | 3 | 0 | 5 | -6 | 3 | 10 |
| 1992 | 5 | -2 | 3 | -1 | 0 | 0 | -1 | -5 | -22 | 6 | 1 | 8 |
| 1993 | 6 | 12 | -2 | -5 | -8 | 1 | 4 | -6 | 1 | 4 | -9 | |
| 1994 | 7 | 2 | -9 | -1 | -4 | 13 | -3 | 3 | 23 | 3 | 3 | 2 |
| 1995 | 1 | 1 | -4 | -3 | -1 | 1 | 1 | 2 | 5 | -1 | ||
| 1996 | 4 | -3 | -2 | -4 | 4 | -1 | -2 | 3 | 3 | 1 | ||
| 1997 | -3 | 3 | -4 | -2 | -1 | -2 | 4 | -3 | 1 | |||
| 1998 | -1 | 3 | -5 | -3 | -4 | -3 | 1 | 4 | 5 | |||
| 1999 | -2 | 3 | 1 | -1 | -3 | 1 | 2 | -2 | 3 | 4 | -2 | 243 |
| 2000 | -2 | 2 | -4 | -6 | -3 | 6 | 5 | -1 | 3 | -2 | ||
| 2001 | -12 | 5 | 2 | -1 | 2 | -4 | 1 | 4 | -9 | 5 | 16 | -1 |
| 2002 | 5 | 9 | -14 | 18 | 9 | 12 | 11 | -7 | 9 | 8 | -7 | 6 |
| 2003 | 25 | 89 | 20 | -213 | -4 | -1 | 3 | 2 | -2 | 1 | 3 | |
| 2004 | 1 | 64 | -3 | -132 | -1 | -25 | -24 | 2 | 3 | -1 | 3 | |
| 2005 | -2 | -1 | -2 | 1 | -1 | -1 | 0 | -3 | -1 | 4 | 2 | -5 |
| 2006 | 6 | -2 | -2 | -2 | 0 | -3 | 1 | 0 | 66 | 11 | 20 | 5 |
| 2007 | -1 | -3 | -1 | -1 | -2 | 3 | -2 | 2 | -1 | 0 | 2 | 3 |
| 2008 | -1 | -3 | 2 | -3 | -36 | 0 | -2 | -3 | 4 | -1 | 35 | -5 |
| 2009 | 4 | 4 | -2 | 1 | 1 | -1 | 3 | -7 | -3 | 7 | 1 | 1 |
| 2010 | -126 | 121 | -125 | 129 | -5 | -3 | 2 | -2 | -3 | 1 | 1 | 2 |
| 2011 | -2 | 1 | 0 | 3 | -1 | 5 | -1 | -1 | -6 | -1 | 1 | -2 |
| 2012 | -1 | -1 | 1 | -2 | 0 | -2 | -3 | 1 | 2 | 1 | -4 | 2 |
| 2013 | 3 | -1 | ||||||||||
| - = 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 |