| Date | Acquired | Amount |
|---|---|---|
| Aug 03, 2017 |
|
$ 287,500,000 |
| Jun 08, 2017 |
|
Undisclosed amount |
| May 03, 2016 |
|
$ 65,000,000 |
| Apr 01, 2016 |
|
Undisclosed amount |
| Dec 07, 2015 |
|
Undisclosed amount |
| Feb 05, 2015 |
|
$ 80,000,000 |
| May 01, 2013 |
|
Undisclosed amount |
| Sep 20, 2011 |
|
Undisclosed amount |
| Aug 01, 2011 |
|
Undisclosed amount |
