| Date | Acquired | Amount |
|---|---|---|
| Feb 08, 2017 |
|
$ 120,000,000 |
| Nov 01, 2016 |
|
Undisclosed amount |
| Dec 14, 2015 |
|
$ 31,800,000 |
| Oct 07, 2014 |
|
Undisclosed amount |
| Feb 14, 2014 |
|
Undisclosed amount |
| May 06, 2011 |
|
Undisclosed amount |
| Jul 28, 2008 |
|
$ 314,000,000 |
| Sep 24, 2003 |
|
Undisclosed amount |
