| Date | Acquired | Amount |
|---|---|---|
| Nov 15, 2017 |
|
Undisclosed amount |
| Oct 05, 2017 |
|
Undisclosed amount |
| Jul 06, 2017 |
|
Undisclosed amount |
| May 15, 2017 |
|
Undisclosed amount |
| Aug 25, 2015 |
|
Undisclosed amount |
| Apr 28, 2014 |
|
$ 185,000,000 |
| Sep 18, 2013 |
|
Undisclosed amount |
| Jun 11, 2013 |
|
Undisclosed amount |
| Mar 25, 2013 |
|
Undisclosed amount |
| Apr 03, 2012 |
|
$ 130,000,000 |
| Aug 30, 2011 |
|
Undisclosed amount |
| Dec 08, 2010 |
|
$ 23,000,000 |
| Sep 22, 2010 |
|
Undisclosed amount |
| Jun 22, 2010 |
|
$ 23,000,000 |
| Mar 25, 2010 |
|
Undisclosed amount |
| Aug 25, 2009 |
|
$ 28,000,000 |
| Jun 06, 2007 |
|
$ 195,000,000 |
| Oct 25, 2005 |
|
Undisclosed amount |
| Apr 24, 2004 |
|
$ 217,000,000 |
| Sep 18, 2002 |
|
Undisclosed amount |
