| Date | Acquired | Amount |
|---|---|---|
| Jul 17, 2017 |
|
Undisclosed amount |
| Aug 04, 2016 |
|
$ 50,000,000 |
| Nov 02, 2015 |
|
$ 80,000,000 |
| Jan 22, 2014 |
|
Undisclosed amount |
| Oct 09, 2013 |
|
Undisclosed amount |
