| Date | Amount |
|---|---|
| 02/18/2021 | 8.14 |
| 02/24/2020 | -0.02 |
| 02/20/2020 | 8.06 |
| 02/12/2019 | 8.06 |
| 02/15/2018 | 8.16 |
| 01/24/2017 | 8.20 |
| 02/04/2016 | 7.82 |
| 02/19/2015 | 8.12 |
| 02/28/2014 | 8.16 |
| 02/13/2013 | 8.20 |
| 02/28/2012 | 7.70 |
| 07/05/2011 | 8.11 |
| 01/14/2010 | 7.24 |
| 02/18/2009 | 6.32 |
| 03/19/2008 | 6.66 |
| 02/15/2007 | 6.48 |
| 08/08/2002 | 13.10 |
| 08/06/2001 | 13.10 |
| 09/18/1996 | 5.96 |
| 09/27/1995 | 5.92 |