| Date | Acquired | Amount |
|---|---|---|
| May 18, 2015 |
|
$ 8,050,000,000 |
| Sep 16, 2014 |
|
$ 2,600,000,000 |
| Aug 01, 2014 |
|
Undisclosed amount |
| Apr 29, 2014 |
|
Undisclosed amount |
| Feb 28, 2014 |
|
Undisclosed amount |
| Sep 03, 2013 |
|
Undisclosed amount |
| Jun 20, 2011 |
|
$ 2,900,000,000 |
| Sep 29, 2010 |
|
$ 1,200,000,000 |
| Aug 09, 2010 |
|
Undisclosed amount |
| Jan 01, 2009 |
|
Undisclosed amount |
| Oct 12, 2006 |
|
Undisclosed amount |
