| Date | Acquired | Amount |
|---|---|---|
| Dec 06, 2016 |
|
$ 821,000,000 |
| Mar 03, 2016 |
|
Undisclosed amount |
| Nov 06, 2015 |
|
Undisclosed amount |
| Feb 04, 2015 |
|
$ 60,000,000 |
| Jul 14, 2014 |
|
$ 26,000,000 |
| Jul 10, 2012 |
|
Undisclosed amount |
| Jan 05, 2012 |
|
$ 59,000,000 |
| Jul 07, 2010 |
|
$ 75,000,000 |
| Sep 10, 2008 |
|
Undisclosed amount |
