| Date | Acquired | Amount |
|---|---|---|
| Feb 14, 2017 |
|
$ 1,650,000,000 |
| Apr 30, 2012 |
|
Undisclosed amount |
| Jun 02, 2011 |
|
Undisclosed amount |
| Jan 07, 2011 |
|
$ 125,000,000 |
| Jul 06, 2010 |
|
$ 85,000,000 |
| Jun 08, 2008 |
|
Undisclosed amount |
| Oct 22, 2007 |
|
Undisclosed amount |
| Sep 19, 2007 |
|
Undisclosed amount |
| Jul 13, 2006 |
|
Undisclosed amount |
| May 02, 2006 |
|
€ 21,000,000 |
| Apr 17, 2006 |
|
Undisclosed amount |
