| Date | Acquired | Amount |
|---|---|---|
| Mar 22, 2017 |
|
Undisclosed amount |
| Dec 06, 2016 |
|
$ 1,800,000,000 |
| Dec 05, 2016 |
|
Undisclosed amount |
| Sep 06, 2016 |
|
Undisclosed amount |
| May 17, 2016 |
|
$ 42,000,000 |
| Dec 07, 2015 |
|
Undisclosed amount |
| Sep 11, 2015 |
|
$ 22,500,000 |
| Apr 10, 2015 |
|
Undisclosed amount |
| Feb 09, 2015 |
|
Undisclosed amount |
| Aug 20, 2014 |
|
Undisclosed amount |
| Oct 15, 2013 |
|
Undisclosed amount |
| Oct 02, 2013 |
|
Undisclosed amount |
| Sep 19, 2013 |
|
Undisclosed amount |
| Aug 19, 2013 |
|
$ 70,000,000 |
| Feb 11, 2013 |
|
Undisclosed amount |
| Jul 18, 2012 |
|
Undisclosed amount |
