| Date | Acquired | Amount |
|---|---|---|
| Jul 18, 2017 |
|
$ 50,000,000 |
| Oct 13, 2015 |
|
$ 68,000,000 |
| May 04, 2015 |
|
Undisclosed amount |
| Oct 09, 2012 |
|
Undisclosed amount |
| Oct 20, 2009 |
|
Undisclosed amount |
