| Date | Acquired | Amount |
|---|---|---|
| May 19, 2017 |
|
Undisclosed amount |
| Dec 07, 2016 |
|
$ 1,820,000,000 |
| Jul 01, 2016 |
|
Undisclosed amount |
| Jun 23, 2016 |
|
$ 4,600,000,000 |
| Feb 04, 2016 |
|
Undisclosed amount |
| Dec 17, 2015 |
|
$ 605,000,000 |
| Feb 19, 2015 |
|
Undisclosed amount |
| Jan 30, 2014 |
|
$ 9,400,000,000 |
| Jan 04, 2013 |
|
$ 323,000,000 |
| Apr 09, 2012 |
|
$ 950,000,000 |
| Feb 04, 2011 |
|
$ 94,400,000 |
| Mar 02, 2004 |
|
$ 107,000,000 |
| Jun 18, 2003 |
|
Undisclosed amount |
