| Date | Acquired | Amount |
|---|---|---|
| Jul 14, 2016 |
|
$ 14,000,000 |
| May 16, 2013 |
|
Undisclosed amount |
| Oct 10, 2012 |
|
Undisclosed amount |
| Jan 30, 2008 |
|
Undisclosed amount |
| Apr 10, 2006 |
|
Undisclosed amount |
