| Date | Acquired | Amount |
|---|---|---|
| Jan 13, 2016 |
|
Undisclosed amount |
| Apr 22, 2015 |
|
Undisclosed amount |
| Apr 15, 2015 |
|
Undisclosed amount |
| Mar 11, 2015 |
|
Undisclosed amount |
| Jan 28, 2014 |
|
Undisclosed amount |
| Oct 23, 2012 |
|
Undisclosed amount |
| Mar 22, 2012 |
|
Undisclosed amount |
