| Date | Acquired | Amount |
|---|---|---|
| Sep 07, 2005 |
|
Undisclosed amount |
| Aug 18, 2003 |
|
$ 10,000,000 |
| Sep 26, 2002 |
|
$ 101,000,000 |
| Jan 14, 2001 |
|
$ 59,000,000 |
