| Date | Acquired | Amount |
|---|---|---|
| Dec 05, 2004 |
|
$ 15,000,000 |
| Nov 29, 2004 |
|
Undisclosed amount |
| Nov 03, 2003 |
|
$ 965,500,000 |
| Jun 30, 2000 |
|
$ 394,000,000 |
| Jan 10, 2000 |
|
$ 128,000,000 |
