| Date | Acquired | Amount |
|---|---|---|
| Sep 08, 2010 |
|
$ 166,000,000 |
| Jun 01, 2008 |
|
$ 27,800,000 |
| May 09, 2005 |
|
$ 44,600,000 |
| May 05, 2003 |
|
$ 358,000,000 |
