| Date | Acquired | Amount |
|---|---|---|
| Oct 20, 2005 |
|
Undisclosed amount |
| Oct 24, 2003 |
|
$ 26,000,000 |
| Jan 16, 2001 |
|
$ 360,000,000 |
| Feb 02, 2000 |
|
Undisclosed amount |
| Dec 01, 1996 |
|
Undisclosed amount |
