| Date | Acquired | Amount |
|---|---|---|
| Feb 22, 2016 |
|
Undisclosed amount |
| Aug 03, 2015 |
|
Undisclosed amount |
| Jan 21, 2014 |
|
$ 10,000,000 |
| Feb 21, 2012 |
|
Undisclosed amount |
| Oct 14, 2010 |
|
Undisclosed amount |
| Jun 09, 2010 |
|
Undisclosed amount |
| Jun 08, 2010 |
|
Undisclosed amount |
| Jun 01, 2009 |
|
Undisclosed amount |
| May 18, 2008 |
|
Undisclosed amount |
| Oct 08, 2007 |
|
Undisclosed amount |
| Sep 25, 2007 |
|
Undisclosed amount |
