- Price History for January 12, 2009.
- Price History for April 29, 2009.
- Price History for August 13, 2009.
- Price History for December 16, 2009.
- Price History for February 05, 2010.
- Price History for May 26, 2010.
- Price History for December 10, 2010.
- Price History for April 19, 2011.
- Price History for July 26, 2011.
- Price History for December 15, 2011.
- Price History for May 15, 2012.
- Price History for December 13, 2012.
- Price History for April 09, 2013.
