| Date | Acquired | Amount |
|---|---|---|
| Mar 11, 2016 |
|
$ 1,000,000,000 |
| Jan 19, 2016 |
|
Undisclosed amount |
| Sep 29, 2010 |
|
Undisclosed amount |
| Jul 22, 2010 |
|
$ 3,500,000,000 |
| Jun 27, 1984 |
|
$ 2,600,000,000 |
| Jul 29, 1909 |
|
$ 4,500,000 |
| Jan 01, 1909 |
|
Undisclosed amount |
| Jan 01, 1908 |
|
Undisclosed amount |
