| Date | Acquired | Amount |
|---|---|---|
| Feb 03, 2015 |
|
Undisclosed amount |
| Dec 07, 2009 |
|
$ 62,400,000 |
| Sep 04, 2003 |
|
Undisclosed amount |
| Apr 23, 2002 |
|
$ 55,000,000 |
| Jan 22, 2002 |
|
Undisclosed amount |
| May 17, 2000 |
|
Undisclosed amount |
| Sep 23, 1998 |
|
Undisclosed amount |
