| Date | Acquired | Amount |
|---|---|---|
| Feb 17, 2017 |
|
Undisclosed amount |
| Jul 26, 2016 |
|
Undisclosed amount |
| Jun 09, 2015 |
|
Undisclosed amount |
| Apr 01, 2015 |
|
Undisclosed amount |
| Sep 17, 2014 |
|
Undisclosed amount |
| Sep 11, 2014 |
|
Undisclosed amount |
| Apr 01, 2012 |
|
Undisclosed amount |
| Oct 23, 2008 |
|
Undisclosed amount |
| May 01, 2008 |
|
Undisclosed amount |
| Jan 01, 2008 |
|
$ 265,000,000 |
| Jul 02, 2007 |
|
Undisclosed amount |
| Mar 19, 2007 |
|
Undisclosed amount |
| Mar 09, 2001 |
|
Undisclosed amount |
