| Date | Acquired | Amount |
|---|---|---|
| Oct 23, 2016 |
|
$ 8,600,000,000 |
| Aug 06, 2015 |
|
$ 50,000,000 |
| Mar 24, 2015 |
|
Undisclosed amount |
| Aug 11, 2013 |
|
Undisclosed amount |
| Jan 11, 2011 |
|
Undisclosed amount |
| Dec 21, 2010 |
|
Undisclosed amount |
| Nov 24, 2009 |
|
Undisclosed amount |
| Apr 01, 2009 |
|
$ 130,000,000 |
| Nov 24, 2008 |
|
Undisclosed amount |
| Mar 03, 2008 |
|
$ 107,000,000 |
| Sep 25, 2006 |
|
Undisclosed amount |
| Sep 06, 2006 |
|
Undisclosed amount |
| May 30, 2006 |
|
Undisclosed amount |
| Apr 06, 2005 |
|
$ 94,000,000 |
| Aug 13, 2002 |
|
Undisclosed amount |
| Nov 02, 2000 |
|
Undisclosed amount |
