| Date | Acquired | Amount |
|---|---|---|
| May 13, 2016 |
|
Undisclosed amount |
| Sep 19, 2015 |
|
Undisclosed amount |
| Mar 20, 2015 |
|
$ 33,000,000 |
| Jun 03, 2013 |
|
Undisclosed amount |
| May 31, 2011 |
|
Undisclosed amount |
| Dec 16, 2004 |
|
Undisclosed amount |
