| Date | Acquired | Amount |
|---|---|---|
| Mar 12, 2015 |
|
Undisclosed amount |
| Oct 21, 2014 |
|
Undisclosed amount |
| Jun 13, 2005 |
|
Undisclosed amount |
| May 10, 2004 |
|
Undisclosed amount |
| Feb 23, 2001 |
|
$ 38,000,000 |
| Feb 22, 2001 |
|
$ 103,000,000 |
| Dec 04, 2000 |
|
$ 2,800,000 |
| Aug 17, 2000 |
|
Undisclosed amount |
