| Date | Acquired | Amount |
|---|---|---|
| May 11, 2011 |
|
Undisclosed amount |
| Mar 17, 2011 |
|
Undisclosed amount |
| Feb 23, 2011 |
|
Undisclosed amount |
| Nov 17, 2010 |
|
Undisclosed amount |
| Sep 20, 2010 |
|
Undisclosed amount |
| Mar 22, 2010 |
|
Undisclosed amount |
| Jan 03, 2010 |
|
Undisclosed amount |
| Dec 10, 2009 |
|
Undisclosed amount |
| Apr 29, 2009 |
|
Undisclosed amount |
| Dec 28, 2006 |
|
Undisclosed amount |
| Feb 02, 2006 |
|
$ 11,100,000 |
| Oct 13, 2005 |
|
Undisclosed amount |
| May 19, 2005 |
|
$ 9,900,000 |
| Mar 07, 2005 |
|
Undisclosed amount |
| Jun 30, 2003 |
|
Undisclosed amount |
