| Date | Acquired | Amount |
|---|---|---|
| Oct 04, 2016 |
|
$ 170,000,000 |
| Jun 01, 2016 |
|
Undisclosed amount |
| May 31, 2016 |
|
$ 250,000,000 |
| Jul 15, 2015 |
|
Undisclosed amount |
| Apr 07, 2014 |
|
Undisclosed amount |
| Mar 01, 2014 |
|
Undisclosed amount |
| May 20, 2013 |
|
Undisclosed amount |
| Jul 16, 2012 |
|
Undisclosed amount |
| Jul 12, 2012 |
|
Undisclosed amount |
| Sep 22, 2010 |
|
Undisclosed amount |
| Sep 08, 2008 |
|
Undisclosed amount |
| Oct 17, 2007 |
|
Undisclosed amount |
| Dec 01, 2004 |
|
Undisclosed amount |
