| Date | Acquired | Amount |
|---|---|---|
| Oct 05, 2005 |
|
$ 24,700,000 |
| Jan 05, 2004 |
|
$ 48,000,000 |
| Jan 07, 2002 |
|
$ 7,350,000 |
| Jun 19, 2000 |
|
Undisclosed amount |
| Mar 09, 2000 |
|
$ 387,000,000 |
