| Date | Acquired | Amount |
|---|---|---|
| Oct 30, 2013 |
|
$ 145,000,000 |
| Jan 03, 2012 |
|
$ 30,000,000 |
| Oct 12, 2006 |
|
$ 217,000,000 |
| Oct 13, 2003 |
|
Undisclosed amount |
| Oct 10, 2003 |
|
Undisclosed amount |
| Jul 31, 2000 |
|
Undisclosed amount |
| May 20, 2000 |
|
Undisclosed amount |
