| Date | Acquired | Amount |
|---|---|---|
| Jan 01, 2006 |
|
Undisclosed amount |
| Sep 29, 2005 |
|
Undisclosed amount |
| Aug 23, 2005 |
|
$ 200,000,000 |
| Mar 11, 2005 |
|
Undisclosed amount |
| Feb 11, 2003 |
|
Undisclosed amount |
