| Date | Acquired | Amount |
|---|---|---|
| Aug 31, 2004 |
|
$ 225,000,000 |
| Jul 15, 2004 |
|
$ 35,000,000 |
| Jan 07, 2004 |
|
$ 59,000,000 |
| May 01, 2003 |
|
$ 62,000,000 |
| Dec 19, 2002 |
|
$ 609,000,000 |
| Jan 08, 2002 |
|
Undisclosed amount |
| Sep 01, 1998 |
|
Undisclosed amount |
| Jan 14, 1997 |
|
Undisclosed amount |
