| Date | Acquired | Amount |
|---|---|---|
| Jun 21, 2016 |
|
Undisclosed amount |
| Nov 17, 2015 |
|
$ 50,000,000 |
| Jul 13, 2015 |
|
Undisclosed amount |
| Oct 13, 2014 |
|
Undisclosed amount |
| Jun 06, 2014 |
|
Undisclosed amount |
| Apr 30, 2014 |
|
Undisclosed amount |
| Mar 20, 2014 |
|
Undisclosed amount |
| Dec 21, 2012 |
|
Undisclosed amount |
| May 23, 2012 |
|
Undisclosed amount |
| Sep 21, 2010 |
|
Undisclosed amount |
| Apr 03, 2008 |
|
Undisclosed amount |
| Sep 01, 2006 |
|
Undisclosed amount |
