| Date | Acquired | Amount |
|---|---|---|
| Jun 08, 2016 |
|
Undisclosed amount |
| Feb 25, 2014 |
|
Undisclosed amount |
| Feb 25, 2014 |
|
Undisclosed amount |
| Feb 03, 2010 |
|
Undisclosed amount |
| Oct 07, 2008 |
|
$ 224,000,000 |
| Jul 31, 2008 |
|
Undisclosed amount |
| Jul 31, 2008 |
|
$ 72,500,000 |
| Jan 04, 2008 |
|
Undisclosed amount |
| May 24, 2004 |
|
$ 93,700,000 |
| Apr 23, 2004 |
|
$ 86,000,000 |
| Mar 18, 2004 |
|
$ 39,500,000 |
| Apr 18, 2002 |
|
$ 800,000 |
