| Date | Acquired | Amount |
|---|---|---|
| Aug 29, 2017 |
|
Undisclosed amount |
| Aug 28, 2017 |
|
Undisclosed amount |
| Oct 21, 2015 |
|
$ 19,000,000,000 |
| Sep 12, 2013 |
|
Undisclosed amount |
| Sep 09, 2013 |
|
$ 685,000,000 |
| Jul 10, 2013 |
|
Undisclosed amount |
| Jan 22, 2013 |
|
Undisclosed amount |
| Mar 08, 2012 |
|
$ 4,800,000,000 |
| Mar 30, 2009 |
|
Undisclosed amount |
| Jun 28, 2007 |
|
$ 1,000,000,000 |
| Feb 02, 1999 |
|
Undisclosed amount |
