who did it?
| Country | 2007* | 2008 | 2009 | SUM | % |
| Netherlands | 5 | 7 | 10 | 22 | 39 |
| UK | 3 | 4 | 4 | 11 | 19 |
| Germany | 8 | 2 | 0 | 10 | 18 |
| Norway | 5 | 1 | 0 | 6 | 11 |
| Sweden | 3 | 0 | 0 | 3 | 5 |
| France | 0 | 1 | 0 | 1 | 2 |
| Switzerland | 0 | 2 | 2 | 4 | 7 |
| Total | 24 | 17 | 16 | 57 | 100 |