| Date | Acquired | Amount |
|---|---|---|
| Oct 04, 2016 |
|
Undisclosed amount |
| Mar 22, 2016 |
|
$ 540,000,000 |
| Jul 22, 2015 |
|
Undisclosed amount |
| Dec 01, 2013 |
|
Undisclosed amount |
| May 06, 2009 |
|
$ 75,000,000 |
| Jan 05, 2009 |
|
$ 9,700,000 |
| May 05, 2008 |
|
$ 73,300,000 |
| Nov 06, 2006 |
|
$ 3,500,000 |
