| Date | Acquired | Amount |
|---|---|---|
| Nov 01, 2015 |
|
Undisclosed amount |
| Sep 27, 2014 |
|
$ 200,000,000 |
| Jun 03, 2014 |
|
Undisclosed amount |
| Oct 12, 2009 |
|
$ 343,200,000 |
| Sep 23, 2008 |
|
Undisclosed amount |
| Dec 03, 2007 |
|
$ 1,200,000,000 |
| Jan 01, 2006 |
|
Undisclosed amount |
| Aug 05, 2003 |
|
Undisclosed amount |
