| Date | Acquired | Amount |
|---|---|---|
| Apr 27, 2010 |
|
$ 53,000,000 |
| Jun 28, 2004 |
|
$ 78,800,000 |
| Jul 17, 2003 |
|
Undisclosed amount |
| Dec 06, 2001 |
|
Undisclosed amount |
