| Date | Acquired | Amount |
|---|---|---|
| Sep 08, 2015 |
|
Undisclosed amount |
| Mar 21, 2014 |
|
Undisclosed amount |
| Oct 31, 2008 |
|
Undisclosed amount |
| Jul 23, 2005 |
|
Undisclosed amount |
| Jun 05, 2002 |
|
Undisclosed amount |
