| Date | Acquired | Amount |
|---|---|---|
| Jul 13, 2017 |
|
Undisclosed amount |
| Jul 10, 2017 |
|
$ 17,000,000 |
| Apr 14, 2016 |
|
€ 7,350,000 |
| Apr 14, 2016 |
|
CHF 3,200,000 |
| May 28, 2014 |
|
Undisclosed amount |
| Jan 10, 2013 |
|
Undisclosed amount |
| Dec 10, 2010 |
|
$ 13,700,000 |
| Dec 19, 2008 |
|
Undisclosed amount |
| Jan 22, 2008 |
|
Undisclosed amount |
| Jun 22, 2007 |
|
Undisclosed amount |
