| Date | Acquired | Amount |
|---|---|---|
| Nov 07, 2017 |
|
Undisclosed amount |
| Jul 25, 2016 |
|
Undisclosed amount |
| Jan 20, 2016 |
|
Undisclosed amount |
| Sep 21, 2015 |
|
Undisclosed amount |
| Jul 06, 2015 |
|
Undisclosed amount |
| Jun 16, 2014 |
|
Undisclosed amount |
| Mar 12, 2014 |
|
Undisclosed amount |
| Mar 26, 2010 |
|
Undisclosed amount |
| Sep 16, 2009 |
|
Undisclosed amount |
| Sep 02, 2009 |
|
Undisclosed amount |
