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| Refining District Appalachian No. 1 Normal Butane-Butylene Stocks at Natural Gas Processing Plants (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1993 | 4 | 7 | 6 | 2 | 5 | 2 | 3 | 5 | 5 | 8 | 6 | 2 |
| 1994 | 4 | 4 | 5 | 3 | 9 | 7 | 21 | 17 | 7 | 6 | 5 | 3 |
| 1995 | 2 | 3 | 3 | 7 | 17 | 30 | 37 | 23 | 11 | 9 | 9 | 5 |
| 1996 | 2 | 3 | 12 | 17 | 21 | 22 | 24 | 4 | 8 | 10 | 9 | 7 |
| 1997 | 4 | 1 | 2 | 1 | 3 | 13 | 14 | 15 | 10 | 11 | 9 | 4 |
| 1998 | 5 | 2 | 5 | 4 | 8 | 9 | 2 | 7 | 9 | 14 | 10 | 15 |
| 1999 | 4 | 4 | 4 | 2 | 9 | 3 | 12 | 17 | 4 | 12 | 2 | 3 |
| 2000 | 7 | 13 | 3 | 15 | 11 | 6 | 32 | 37 | 8 | 2 | 2 | 2 |
| 2001 | 1 | 6 | 2 | 2 | 3 | 4 | 17 | 26 | 9 | 4 | 2 | 6 |
| 2002 | 3 | 3 | 4 | 5 | 18 | 27 | 36 | 41 | 21 | 9 | 7 | 3 |
| 2003 | 2 | 2 | 2 | 7 | 4 | 1 | 4 | 12 | 7 | 2 | 1 | |
| 2004 | 4 | 6 | 4 | 4 | 5 | 2 | 5 | 3 | 5 | 7 | 5 | 7 |
| 2005 | 2 | 4 | 2 | 3 | 7 | 3 | 3 | 2 | 1 | 5 | ||
| 2006 | 12 | 13 | 5 | 10 | 8 | 7 | 6 | 7 | 7 | 14 | 8 | 9 |
| 2007 | 10 | 5 | 7 | 7 | 7 | 9 | 9 | 11 | 8 | 3 | 7 | 3 |
| 2008 | 4 | 2 | 10 | 3 | 3 | 5 | 7 | 8 | 2 | 4 | 6 | 4 |
| 2009 | 4 | 4 | 3 | 4 | 5 | 5 | 2 | 1 | 2 | 4 | 3 | 4 |
| 2010 | 5 | 2 | 2 | 2 | 5 | 6 | 9 | 8 | 6 | 8 | 8 | |
| 2011 | 7 | 5 | 5 | 11 | 14 | 14 | 24 | 18 | 7 | 17 | 10 | 10 |
| 2012 | 13 | 7 | 25 | 10 | 12 | 14 | 5 | 8 | 8 | 4 | 3 | 2 |
| 2013 | 18 | 24 | ||||||||||
| - = 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 |