| Date | Acquired | Amount |
|---|---|---|
| Oct 03, 2017 |
|
$ 102,000,000 |
| Jun 01, 2017 |
|
Undisclosed amount |
| Nov 01, 2016 |
|
Undisclosed amount |
| Oct 12, 2016 |
|
Undisclosed amount |
| Feb 23, 2015 |
|
Undisclosed amount |
| Aug 22, 2014 |
|
$ 471,000,000 |
| Feb 08, 2013 |
|
Undisclosed amount |
| Apr 14, 2012 |
|
Undisclosed amount |
| Jan 31, 2012 |
|
Undisclosed amount |
| Apr 17, 2006 |
|
Undisclosed amount |
