| Date | Acquired | Amount |
|---|---|---|
| Dec 01, 2015 |
|
$ 180,000,000 |
| Feb 11, 2015 |
|
$ 15,000,000 |
| Jun 30, 2014 |
|
$ 42,000,000 |
| Sep 16, 2013 |
|
Undisclosed amount |
| Nov 01, 2012 |
|
$ 41,000,000 |
| Aug 01, 2011 |
|
$ 32,000,000 |
