| Date | Acquired | Amount |
|---|---|---|
| Jun 06, 2016 |
|
Undisclosed amount |
| Jan 05, 2015 |
|
$ 62,500,000 |
| May 19, 2010 |
|
Undisclosed amount |
| Oct 31, 2009 |
|
Undisclosed amount |
| Jun 09, 2008 |
|
Undisclosed amount |
