| Date | Acquired | Amount |
|---|---|---|
| Sep 27, 2017 |
|
Undisclosed amount |
| Dec 20, 2016 |
|
Undisclosed amount |
| Oct 02, 2015 |
|
Undisclosed amount |
| Jun 18, 2015 |
|
Undisclosed amount |
| Mar 21, 2014 |
|
Undisclosed amount |
| Sep 17, 2013 |
|
Undisclosed amount |
| May 21, 2009 |
|
Undisclosed amount |
| Jan 27, 2009 |
|
Undisclosed amount |
| Jan 14, 2009 |
|
Undisclosed amount |
| Feb 28, 2008 |
|
Undisclosed amount |
| Jan 18, 2005 |
|
Undisclosed amount |
| Jul 31, 1999 |
|
Undisclosed amount |
| Jul 01, 1999 |
|
Undisclosed amount |
