| Date | Acquired | Amount |
|---|---|---|
| Oct 31, 2006 |
|
Undisclosed amount |
| Feb 09, 2006 |
|
$ 72,100,000 |
| Dec 17, 2004 |
|
$ 7,700,000 |
| May 05, 2003 |
|
$ 13,600,000 |
| Sep 11, 2002 |
|
$ 4,500,000 |
