| Date | Acquired | Amount |
|---|---|---|
| Aug 10, 2017 |
|
Undisclosed amount |
| Feb 14, 2017 |
|
$ 238,000,000 |
| Aug 19, 2015 |
|
Undisclosed amount |
| Jul 02, 2015 |
|
$ 890,000,000 |
| Mar 05, 2015 |
|
$ 60,000,000 |
| Mar 02, 2015 |
|
$ 280,000,000 |
| Dec 17, 2013 |
|
Undisclosed amount |
| Sep 26, 2013 |
|
Undisclosed amount |
| Apr 13, 2013 |
|
Undisclosed amount |
| Jul 17, 2012 |
|
Undisclosed amount |
| Apr 28, 2011 |
|
Undisclosed amount |
| Jan 28, 2008 |
|
Undisclosed amount |
| Mar 01, 2000 |
|
Undisclosed amount |
