| Date | Acquired | Amount |
|---|---|---|
| Aug 05, 2014 |
|
$ 1,300,000,000 |
| Mar 18, 2013 |
|
$ 18,000,000 |
| Feb 25, 2013 |
|
$ 69,200,000 |
| Nov 08, 2012 |
|
$ 47,500,000 |
| Oct 07, 2011 |
|
$ 37,200,000 |
| May 25, 2011 |
|
$ 28,100,000 |
| Dec 18, 2009 |
|
Undisclosed amount |
| Feb 22, 2007 |
|
$ 25,100,000 |
| Jun 14, 2006 |
|
$ 13,600,000 |
| Nov 16, 2004 |
|
$ 100,000,000 |
| Aug 13, 2003 |
|
$ 7,500,000 |
| Sep 06, 2001 |
|
$ 20,000,000 |
| Feb 02, 2001 |
|
$ 3,600,000 |
| Oct 24, 2000 |
|
$ 6,000,000 |
| May 15, 2000 |
|
$ 17,800,000 |
| Mar 22, 2000 |
|
$ 2,000,000 |
| Mar 20, 1998 |
|
Undisclosed amount |
