| Date | Acquired | Amount |
|---|---|---|
| Oct 22, 2007 |
|
$ 169,000,000 |
| Jul 22, 2005 |
|
$ 172,000,000 |
| Feb 05, 2001 |
|
$ 185,000,000 |
| Sep 20, 2000 |
|
$ 2,250,000,000 |
| May 05, 2000 |
|
$ 872,000,000 |
| Jun 08, 1999 |
|
$ 20,000,000 |
