| Date | Acquired | Amount |
|---|---|---|
| Apr 05, 2017 |
|
$ 7,200,000,000 |
| May 09, 2016 |
|
$ 1,350,000,000 |
| Dec 07, 2015 |
|
$ 13,900,000,000 |
| Jun 02, 2015 |
|
NOK 2,200,000,000 |
| Sep 29, 2014 |
|
$ 374,000,000 |
| Jul 23, 2012 |
|
$ 974,000,000 |
