| Date | Acquired | Amount |
|---|---|---|
| Aug 04, 2015 |
|
Undisclosed amount |
| Apr 15, 2014 |
|
$ 3,450,000,000 |
| Dec 19, 2013 |
|
$ 94,000,000 |
| Jan 18, 2013 |
|
$ 1,500,000 |
| Jul 13, 2012 |
|
Undisclosed amount |
| Apr 16, 2008 |
|
Undisclosed amount |
| Dec 17, 2007 |
|
Undisclosed amount |
| Oct 15, 2007 |
|
Undisclosed amount |
| Jan 15, 2007 |
|
$ 126,000,000 |
| Oct 04, 2006 |
|
Undisclosed amount |
| Apr 03, 2000 |
|
Undisclosed amount |
| Oct 28, 1998 |
|
Undisclosed amount |
| Jul 06, 1995 |
|
Undisclosed amount |
