| Date | Acquired | Amount |
|---|---|---|
| Feb 22, 2017 |
|
Undisclosed amount |
| Feb 07, 2017 |
|
Undisclosed amount |
| Mar 29, 2016 |
|
Undisclosed amount |
| Sep 25, 2014 |
|
Undisclosed amount |
| Sep 04, 2014 |
|
Undisclosed amount |
| Jan 22, 2014 |
|
Undisclosed amount |
| Sep 05, 2012 |
|
Undisclosed amount |
| Oct 10, 2011 |
|
Undisclosed amount |
| Sep 27, 2011 |
|
Undisclosed amount |
| Sep 16, 2011 |
|
Undisclosed amount |
| Apr 06, 2011 |
|
Undisclosed amount |
| Mar 12, 2010 |
|
Undisclosed amount |
