| Date | Acquired | Amount |
|---|---|---|
| Jul 15, 2015 |
|
Undisclosed amount |
| Aug 01, 2013 |
|
Undisclosed amount |
| Jul 01, 2013 |
|
Undisclosed amount |
| Dec 12, 2012 |
|
$ 19,500,000 |
| Aug 09, 2012 |
|
Undisclosed amount |
| Apr 01, 2012 |
|
Undisclosed amount |
| Jan 30, 2012 |
|
$ 305,900,000 |
| Jan 19, 2012 |
|
$ 14,100,000 |
| Oct 05, 2011 |
|
Undisclosed amount |
| Jul 07, 2011 |
|
$ 21,000,000 |
| Apr 28, 2011 |
|
$ 130,000,000 |
| Dec 03, 2010 |
|
$ 51,500,000 |
| Oct 05, 2010 |
|
Undisclosed amount |
| Oct 19, 2009 |
|
Undisclosed amount |
| Aug 10, 2009 |
|
Undisclosed amount |
| Jun 17, 2008 |
|
Undisclosed amount |
| Mar 17, 2008 |
|
$ 800,000,000 |
| Sep 08, 2007 |
|
$ 22,000,000 |
| Jul 19, 2007 |
|
$ 54,000,000 |
| May 29, 2007 |
|
$ 41,000,000 |
| May 01, 2006 |
|
$ 150,000,000 |
| Aug 30, 2005 |
|
$ 5,300,000 |
| Mar 23, 2005 |
|
$ 18,000,000 |
| Jan 28, 2005 |
|
$ 33,100,000 |
| Apr 29, 2004 |
|
$ 239,000,000 |
| Mar 31, 2003 |
|
$ 42,000,000 |
| Nov 21, 2002 |
|
$ 355,000,000 |
| Aug 08, 2000 |
|
$ 71,500,000 |
| May 02, 2000 |
|
$ 100,000,000 |
| Mar 09, 1999 |
|
$ 673,000,000 |
| Nov 02, 1998 |
|
$ 900,000,000 |
| Feb 02, 1998 |
|
$ 285,000,000 |
| May 21, 1997 |
|
$ 60,000,000 |
| Jan 17, 1994 |
|
$ 36,000,000 |
