| Date | Acquired | Amount |
|---|---|---|
| Nov 23, 2016 |
|
$ 22,000,000 |
| Jan 27, 2016 |
|
Undisclosed amount |
| Nov 20, 2014 |
|
Undisclosed amount |
| Apr 30, 2012 |
|
$ 5,500,000 |
