| Date | Amount |
|---|---|
| 06/17/2016 | 4.47 |
| 02/01/2016 | 4.47 |
| 06/15/2015 | 4.68 |
| 02/12/2015 | 4.68 |
| 06/04/2014 | 6.62 |
| 01/27/2014 | 6.62 |
| 06/06/2013 | 7.18 |
| 02/04/2013 | 7.18 |
| 01/30/2012 | 19.72 |
| 02/03/2011 | 18.92 |
| 01/25/2010 | 20.26 |
| 02/02/2009 | 20.30 |
| 01/25/2008 | 17.92 |
| 01/12/2007 | 45.10 |
| 02/06/2006 | 28.86 |
| 02/07/2005 | 18.98 |
| 02/11/2004 | 19.26 |
| 01/30/2003 | 16.10 |
| 02/14/2002 | 15.64 |
| 01/26/2001 | 18.40 |