| Date | Acquired | Amount |
|---|---|---|
| Jun 05, 2017 |
|
$ 152,000,000 |
| Aug 01, 2016 |
|
$ 400,000,000 |
| Oct 13, 2014 |
|
$ 163,000,000 |
| Aug 07, 2014 |
|
Undisclosed amount |
| Sep 17, 2010 |
|
Undisclosed amount |
