| Date | Acquired | Amount |
|---|---|---|
| Nov 16, 2015 |
|
$ 75,000,000 |
| Oct 06, 2015 |
|
$ 450,000,000 |
| May 19, 2015 |
|
Undisclosed amount |
| Jun 11, 2013 |
|
Undisclosed amount |
