| Date | Acquired | Amount |
|---|---|---|
| Jun 02, 2017 |
|
$ 42,000,000 |
| Mar 16, 2015 |
|
Undisclosed amount |
| May 25, 2010 |
|
Undisclosed amount |
| Nov 12, 2009 |
|
Undisclosed amount |
| Aug 07, 2007 |
|
Undisclosed amount |
| Apr 17, 2007 |
|
Undisclosed amount |
