| Date | Acquired | Amount |
|---|---|---|
| Jul 28, 2011 |
|
Undisclosed amount |
| Jan 29, 2010 |
|
$ 130,000,000 |
| Sep 02, 2009 |
|
Undisclosed amount |
| Jun 02, 2009 |
|
Undisclosed amount |
| Feb 13, 2009 |
|
$ 40,000,000 |
| Apr 17, 2008 |
|
$ 85,000,000 |
| Nov 27, 2006 |
|
$ 55,000,000 |
| Jan 26, 2006 |
|
$ 55,000,000 |
| Sep 15, 2003 |
|
$ 62,000,000 |
