| Date | Acquired | Amount |
|---|---|---|
| Jul 11, 2017 |
|
$ 85,000,000 |
| Sep 15, 2016 |
|
$ 13,000,000 |
| Apr 12, 2016 |
|
$ 50,000,000 |
| Jun 06, 2013 |
|
Undisclosed amount |
| Jul 20, 2011 |
|
Undisclosed amount |
| Jul 14, 2010 |
|
Undisclosed amount |
| Nov 10, 2009 |
|
$ 405,000,000 |
| Nov 01, 2008 |
|
Undisclosed amount |
| Aug 14, 2008 |
|
$ 34,000,000 |
| Jan 01, 2008 |
|
$ 24,000,000 |
| Oct 19, 2006 |
|
Undisclosed amount |
| May 05, 2004 |
|
$ 29,000,000 |
| Jun 11, 2002 |
|
Undisclosed amount |
