| Date | Acquired | Amount |
|---|---|---|
| May 02, 2016 |
|
Undisclosed amount |
| Sep 11, 2015 |
|
Undisclosed amount |
| Mar 03, 2014 |
|
$ 52,000,000 |
| Jul 02, 2012 |
|
$ 660,000,000 |
