| Date | Acquired | Amount |
|---|---|---|
| Feb 18, 2016 |
|
Undisclosed amount |
| Aug 27, 2014 |
|
Undisclosed amount |
| Jul 06, 2010 |
|
$ 361,500,000 |
| Sep 13, 2009 |
|
$ 589,000,000 |
