| Date | Acquired | Amount |
|---|---|---|
| Oct 30, 2017 |
|
€ 900,000,000 |
| May 15, 2017 |
|
$ 560,000,000 |
| Feb 24, 2016 |
|
$ 450,000,000 |
| Jun 03, 2013 |
|
Undisclosed amount |
| Aug 05, 2011 |
|
Undisclosed amount |
| Sep 18, 2006 |
|
$ 32,000,000 |
| Dec 09, 2005 |
|
Undisclosed amount |
| Feb 05, 2004 |
|
Undisclosed amount |
| Nov 03, 1999 |
|
Undisclosed amount |
| May 28, 1997 |
|
Undisclosed amount |
| May 12, 1994 |
|
$ 45,000,000 |
