| Date | Acquired | Amount |
|---|---|---|
| May 05, 2016 |
|
Undisclosed amount |
| Mar 04, 2016 |
|
Undisclosed amount |
| Apr 23, 2015 |
|
$ 200,000,000 |
| Jul 17, 2014 |
|
Undisclosed amount |
| Oct 22, 2013 |
|
Undisclosed amount |
| May 08, 2013 |
|
Undisclosed amount |
| Mar 13, 2013 |
|
Undisclosed amount |
| Jan 10, 2013 |
|
Undisclosed amount |
| Jun 02, 2008 |
|
$ 26,000,000 |
