| Date | Acquired | Amount |
|---|---|---|
| May 27, 2007 |
|
$ 15,000,000 |
| Oct 20, 2004 |
|
$ 90,000,000 |
| Aug 30, 2004 |
|
$ 15,500,000 |
| Jul 19, 2004 |
|
Undisclosed amount |
| May 21, 2004 |
|
Undisclosed amount |
| Sep 16, 2002 |
|
€ 80,000,000 |
| Mar 29, 2001 |
|
$ 30,000,000 |
