Region
United States
6
Europe
3
Middle East
3
Central Europe
2
Europe, Central
2
Turkey
2
Australia
1
Australie
1
Brazil
1
China
1
Czech Republic
1
East Asia
1
Eastern Europe
1
Europe, Eastern
1
Extrême-Orient
1
États-Unis
1
Former communist countries
1
France
1
Pacific Area
1
Pays de l'Union européenne
1
Romania
1
Soviet Union
1
Turquie
1
URSS
1