| Date | Acquired | Amount |
|---|---|---|
| Nov 05, 2015 |
|
$ 450,000,000 |
| Jul 30, 2015 |
|
$ 86,900,000 |
| Mar 20, 2014 |
|
Undisclosed amount |
| Mar 01, 2014 |
|
Undisclosed amount |
| Oct 31, 2013 |
|
$ 119,000,000 |
| Oct 11, 2011 |
|
Undisclosed amount |
| Nov 05, 2010 |
|
Undisclosed amount |
| Jan 15, 2008 |
|
Undisclosed amount |
| Nov 27, 2006 |
|
$ 139,000,000 |
| Apr 19, 2005 |
|
$ 61,800,000 |
| Feb 07, 2005 |
|
Undisclosed amount |
| Sep 02, 2003 |
|
Undisclosed amount |
| Jan 01, 2003 |
|
$ 2,500,000 |
