| Date | Acquired | Amount |
|---|---|---|
| Oct 28, 2013 |
|
Undisclosed amount |
| Jul 31, 2013 |
|
Undisclosed amount |
| Feb 01, 2013 |
|
Undisclosed amount |
| Sep 14, 2010 |
|
Undisclosed amount |
| Aug 01, 2009 |
|
Undisclosed amount |
| Feb 22, 2008 |
|
Undisclosed amount |
| Sep 27, 2007 |
|
$ 20,000,000 |
| Jun 01, 2007 |
|
$ 11,200,000 |
| Feb 06, 2007 |
|
Undisclosed amount |
| Sep 12, 2006 |
|
$ 56,000,000 |
| Feb 06, 2006 |
|
Undisclosed amount |
| May 06, 2005 |
|
Undisclosed amount |
| Jan 27, 2004 |
|
$ 35,600,000 |
| Apr 22, 2003 |
|
Undisclosed amount |
| Jan 15, 2001 |
|
$ 12,000,000 |
| Jan 26, 2000 |
|
Undisclosed amount |
| Apr 14, 1999 |
|
Undisclosed amount |
| Jun 01, 1998 |
|
Undisclosed amount |
