Challengers by country
France
35
Germany
31
Sweden
29
Poland
17
Turkey
17
Spain
15
United Kingdom
9
Denmark
8
Netherlands
7
Russia
6
Norway
6
China
5
Austria
5
Greece
5
Romania
4
Hungary
4
Finland
4
Portugal
3
Serbia
3
Slovakia
3
Italy
3
Bulgaria
3
Australia
2
Albania
2
Israel
2
South Korea
2
Estonia
2
Belgium
2
Czech Republic
2
Lithuania
2
Moldova
1
Bosnia and Herzegovina
1
Lebanon
1
Luxembourg
1
Ireland
1
Algeria
1
Ukraine
1
Montenegro
1
Egypt
1
Jordan
1
Macedonia
1
Latvia
1