| Date | Acquired | Amount |
|---|---|---|
| Aug 03, 2016 |
|
$ 122,000,000 |
| Jul 18, 2016 |
|
Undisclosed amount |
| Feb 10, 2015 |
|
$ 400,000,000 |
| Nov 17, 2014 |
|
Undisclosed amount |
| Jul 07, 2014 |
|
Undisclosed amount |
| Aug 22, 2011 |
|
Undisclosed amount |
| Aug 09, 2005 |
|
$ 200,000,000 |
| Aug 28, 2003 |
|
Undisclosed amount |
