| Date | Acquired | Amount |
|---|---|---|
| Oct 17, 2017 |
|
Undisclosed amount |
| Jul 09, 2015 |
|
$ 190,000,000 |
| Jun 29, 2015 |
|
Undisclosed amount |
| Dec 10, 2013 |
|
Undisclosed amount |
| Sep 16, 2013 |
|
Undisclosed amount |
