| Date | Acquired | Amount |
|---|---|---|
| Jul 21, 2017 |
|
Undisclosed amount |
| Jul 11, 2017 |
|
Undisclosed amount |
| Apr 20, 2017 |
|
$ 710,000,000 |
| Sep 06, 2016 |
|
Undisclosed amount |
| Apr 07, 2016 |
|
$ 96,000,000 |
| Oct 28, 2014 |
|
Undisclosed amount |
| Sep 24, 2014 |
|
Undisclosed amount |
