Challengers by country
France
31
Germany
28
Sweden
24
Turkey
18
Spain
17
Poland
15
Denmark
15
United Kingdom
14
Netherlands
9
Czech Republic
7
Greece
6
Austria
6
Portugal
5
Bulgaria
5
Belgium
4
Norway
4
Finland
4
Slovenia
3
China
3
Switzerland
3
Russia
3
Italy
3
Lithuania
3
Hungary
2
Croatia
2
Serbia
2
Slovakia
2
Morocco
2
Romania
1
Israel
1
Egypt
1
Australia
1
Ukraine
1
Tunisia
1
Macedonia
1
Lebanon
1
Estonia
1
South Korea
1
Saudi Arabia
1