| Date | Acquired | Amount |
|---|---|---|
| Dec 05, 2006 |
|
Undisclosed amount |
| Jun 27, 2000 |
|
$ 80,000,000 |
| Apr 03, 2000 |
|
$ 92,000,000 |
| Jun 01, 1997 |
|
Undisclosed amount |
