| Date | Acquired | Amount |
|---|---|---|
| Jul 06, 2016 |
|
$ 250,000,000 |
| Jul 01, 2016 |
|
Undisclosed amount |
| Mar 21, 2016 |
|
Undisclosed amount |
| Jul 09, 2015 |
|
Undisclosed amount |
| Nov 04, 2014 |
|
$ 195,000,000 |
| Jul 03, 2014 |
|
$ 60,000,000 |
| Jun 17, 2014 |
|
$ 300,000,000 |
| Apr 15, 2014 |
|
Undisclosed amount |
| Jun 18, 2013 |
|
Undisclosed amount |
| May 03, 2011 |
|
Undisclosed amount |
