| Date | Acquired | Amount |
|---|---|---|
| Mar 02, 2016 |
|
Undisclosed amount |
| Aug 07, 2008 |
|
Undisclosed amount |
| Dec 13, 2005 |
|
$ 40,000,000 |
| Aug 29, 2000 |
|
Undisclosed amount |
| Sep 28, 1999 |
|
Undisclosed amount |
| Mar 29, 1999 |
|
$ 50,000,000 |
