| Date | Acquired | Amount |
|---|---|---|
| Aug 28, 2017 |
|
Undisclosed amount |
| Nov 05, 2015 |
|
Undisclosed amount |
| Nov 05, 2015 |
|
Undisclosed amount |
| Feb 10, 2015 |
|
Undisclosed amount |
| Nov 12, 2013 |
|
Undisclosed amount |
| Jun 21, 2012 |
|
$ 17,500,000 |
| Jul 06, 2006 |
|
$ 1,300,000,000 |
