Country
- Switzerland35
- Armenia, active Egypt32
- Belgium31
- Austria30
- Mexico27
- Greece, active Algeria, Egypt, Jerusalem, born Greece19
- Spain, born France19
- Canada17
- Democratic Republic of Congo17
- United States, born Japan16
- Poland13
- Denmark, born Belgium12
- United States, born Great Britain11
- United States, born Mexico11
- United States, born Russia11
- United States, born Sweden11
- Czechoslovakia9
- Hungary9
- United States, born Scotland9
- Australia8