| Date | Acquired | Amount |
|---|---|---|
| Aug 07, 2015 |
|
$ 125,000,000 |
| Jun 10, 2015 |
|
$ 550,000,000 |
| Sep 17, 2014 |
|
$ 195,000,000 |
| Dec 09, 2013 |
|
Undisclosed amount |
