| Date | Acquired | Amount |
|---|---|---|
| Nov 09, 2017 |
|
$ 455,000,000 |
| Sep 27, 2012 |
|
Undisclosed amount |
| Dec 01, 2011 |
|
Undisclosed amount |
| Jul 12, 2011 |
|
$ 1,300,000,000 |
| May 03, 2011 |
|
Undisclosed amount |
| Oct 01, 2010 |
|
Undisclosed amount |
| Nov 09, 2009 |
|
$ 400,000,000 |
| Jun 19, 2009 |
|
Undisclosed amount |
| Dec 02, 2008 |
|
Undisclosed amount |
| May 23, 2008 |
|
Undisclosed amount |
| May 08, 2008 |
|
$ 15,000,000 |
| Oct 11, 2007 |
|
$ 860,000,000 |
| Oct 05, 2007 |
|
Undisclosed amount |
| Feb 12, 2007 |
|
Undisclosed amount |
| Nov 30, 2006 |
|
Undisclosed amount |
| Oct 02, 2006 |
|
Undisclosed amount |
| Aug 23, 2006 |
|
Undisclosed amount |
| Jun 20, 2006 |
|
Undisclosed amount |
| Dec 08, 2005 |
|
$ 680,000,000 |
| Jul 27, 2005 |
|
Undisclosed amount |
| Jul 28, 2004 |
|
Undisclosed amount |
| Feb 13, 2004 |
|
Undisclosed amount |
| Oct 16, 2003 |
|
Undisclosed amount |
| Jun 11, 2002 |
|
Undisclosed amount |
| Feb 28, 2001 |
|
Undisclosed amount |
| Feb 24, 2000 |
|
Undisclosed amount |
| Nov 22, 1999 |
|
Undisclosed amount |
| Sep 08, 1999 |
|
Undisclosed amount |
| Jul 28, 1998 |
|
Undisclosed amount |
| Apr 02, 1998 |
|
Undisclosed amount |
| Jul 28, 1997 |
|
Undisclosed amount |
| Apr 08, 1996 |
|
Undisclosed amount |
| Jan 29, 1996 |
|
Undisclosed amount |
| Jan 06, 1995 |
|
Undisclosed amount |
| Nov 14, 1994 |
|
Undisclosed amount |
| Sep 01, 1992 |
|
$ 35,000,000 |
| Aug 01, 1991 |
|
Undisclosed amount |
