| Date | Acquired | Amount |
|---|---|---|
| Dec 31, 2015 |
|
$ 75,000,000 |
| May 06, 2010 |
|
Undisclosed amount |
| Dec 23, 2008 |
|
$ 86,000,000 |
| Jul 25, 2007 |
|
$ 15,500,000 |
| Aug 22, 2006 |
|
$ 45,000,000 |
| Feb 28, 2005 |
|
£ 4,000,000 |
| Oct 28, 1999 |
|
Undisclosed amount |
