| Date | Acquired | Amount |
|---|---|---|
| Dec 09, 2014 |
|
Undisclosed amount |
| Dec 09, 2014 |
|
Undisclosed amount |
| Oct 07, 2014 |
|
Undisclosed amount |
| Sep 10, 2014 |
|
Undisclosed amount |
| Jun 16, 2014 |
|
$ 175,000,000 |
| Mar 18, 2014 |
|
Undisclosed amount |
| Oct 04, 2013 |
|
$ 80,000,000 |
| Nov 28, 2011 |
|
Undisclosed amount |
| Aug 26, 2011 |
|
Undisclosed amount |
| Jan 27, 2011 |
|
Undisclosed amount |
| Dec 24, 2010 |
|
Undisclosed amount |
| Oct 22, 2008 |
|
Undisclosed amount |
| Mar 31, 2007 |
|
Undisclosed amount |
