| Date | Acquired | Amount |
|---|---|---|
| Mar 03, 2017 |
|
Undisclosed amount |
| Nov 09, 2015 |
|
Undisclosed amount |
| Nov 10, 2014 |
|
$ 77,000,000 |
| Oct 09, 2014 |
|
Undisclosed amount |
| Oct 08, 2013 |
|
Undisclosed amount |
| Nov 27, 2012 |
|
Undisclosed amount |
| Sep 18, 2003 |
|
$ 21,000,000 |
| Jan 20, 2000 |
|
$ 190,000,000 |
