| Date | Acquired | Amount |
|---|---|---|
| Apr 07, 2015 |
|
$ 770,000,000 |
| Sep 19, 2012 |
|
$ 26,500,000 |
| May 22, 2012 |
|
$ 9,400,000 |
| Mar 05, 2012 |
|
$ 321,000,000 |
| Mar 26, 2001 |
|
$ 8,650,000,000 |
