| Date | Acquired | Amount |
|---|---|---|
| Dec 06, 2012 |
|
$ 130,000,000 |
| Jun 07, 2010 |
|
$ 283,140,000 |
| Aug 30, 2006 |
|
$ 180,000,000 |
| Apr 20, 2006 |
|
Undisclosed amount |
| Oct 17, 2003 |
|
Undisclosed amount |
| Oct 08, 2003 |
|
Undisclosed amount |
| Mar 02, 2001 |
|
Undisclosed amount |
