Region
United States
62
European Union countries
7
China
6
Europe
3
Islamic countries
3
Asia
2
Developing countries
2
European Economic Community countries
2
Africa
1
Balkan Peninsula
1
Belgium
1
Czech Republic
1
Germany
1
Germany (West)
1
Great Britain
1
Greece
1
India
1
Japan
1
Latin America
1
Netherlands
1
Scandinavia
1
South Asia
1
Switzerland
1