| Date | Acquired | Amount |
|---|---|---|
| Dec 04, 2013 |
|
Undisclosed amount |
| Jul 16, 2012 |
|
$ 19,000,000 |
| Sep 24, 2010 |
|
Undisclosed amount |
| Dec 08, 2008 |
|
Undisclosed amount |
| Apr 17, 2008 |
|
$ 39,000,000 |
| Aug 13, 2007 |
|
Undisclosed amount |
| Jul 10, 2007 |
|
Undisclosed amount |
| Mar 06, 2006 |
|
$ 22,000,000 |
| Jan 13, 2003 |
|
$ 3,200,000 |
| Jun 06, 2002 |
|
$ 300,000,000 |
| Sep 17, 2001 |
|
$ 16,700,000 |
| Apr 20, 1998 |
|
$ 4,700,000 |
