| Date | Acquired | Amount |
|---|---|---|
| Feb 27, 2017 |
|
Undisclosed amount |
| Feb 09, 2016 |
|
Undisclosed amount |
| Jan 06, 2016 |
|
Undisclosed amount |
| Mar 27, 2015 |
|
Undisclosed amount |
| Oct 24, 2013 |
|
Undisclosed amount |
| Sep 19, 2012 |
|
Undisclosed amount |
| Dec 14, 2011 |
|
Undisclosed amount |
| Jan 12, 2009 |
|
Undisclosed amount |
| Jan 23, 2003 |
|
Undisclosed amount |
| Aug 17, 2001 |
|
Undisclosed amount |
