| Date | Acquired | Amount |
|---|---|---|
| Mar 06, 2017 |
|
Undisclosed amount |
| Jul 26, 2016 |
|
Undisclosed amount |
| Nov 22, 2011 |
|
Undisclosed amount |
| Feb 02, 1996 |
|
Undisclosed amount |
| Jun 27, 1995 |
|
$ 1,650,000,000 |
