| Date | Acquired | Amount |
|---|---|---|
| Aug 28, 2017 |
|
$ 750,000,000 |
| Jul 10, 2017 |
|
Undisclosed amount |
| Apr 04, 2016 |
|
$ 19,200,000 |
| Nov 09, 2015 |
|
$ 350,000,000 |
| Oct 01, 2015 |
|
$ 6,500,000 |
| Mar 16, 2015 |
|
Undisclosed amount |
| Jan 06, 2014 |
|
$ 52,800,000 |
| Apr 15, 2013 |
|
$ 145,000,000 |
| Sep 26, 2012 |
|
$ 10,600,000 |
| Jun 01, 2012 |
|
$ 23,900,000 |
| Aug 05, 2011 |
|
$ 11,100,000 |
| Dec 22, 2010 |
|
$ 50,000,000 |
| Sep 17, 2008 |
|
$ 37,700,000 |
| Mar 03, 2008 |
|
$ 9,200,000 |
| Aug 01, 2006 |
|
$ 6,000,000 |
| Jun 21, 2006 |
|
$ 5,500,000 |
| May 30, 2006 |
|
Undisclosed amount |
| Feb 03, 2006 |
|
$ 2,500,000 |
| Jul 08, 2003 |
|
$ 44,000,000 |
| Jul 19, 2002 |
|
Undisclosed amount |
