| Date | Acquired | Amount |
|---|---|---|
| Apr 06, 2016 |
|
Undisclosed amount |
| Feb 05, 2010 |
|
$ 45,000,000 |
| Feb 28, 2009 |
|
Undisclosed amount |
| Oct 09, 2000 |
|
$ 58,300,000 |
| Mar 14, 2000 |
|
Undisclosed amount |
