| Date | Acquired | Amount |
|---|---|---|
| Sep 15, 2014 |
|
$ 199,000,000 |
| Apr 02, 2012 |
|
Undisclosed amount |
| Mar 08, 2000 |
|
$ 657,000,000 |
| Feb 15, 2000 |
|
$ 33,000,000 |
| Nov 12, 1999 |
|
Undisclosed amount |
