| Date | Acquired | Amount |
|---|---|---|
| Jun 01, 2015 |
|
$ 7,500,000 |
| Mar 22, 2014 |
|
Undisclosed amount |
| Mar 07, 2014 |
|
Undisclosed amount |
| Aug 19, 2012 |
|
$ 56,000,000 |
| Apr 20, 2010 |
|
Undisclosed amount |
| Jan 24, 2008 |
|
Undisclosed amount |
