Region
United States
52
China
13
Japan
13
Great Britain
8
Germany
6
Europe
5
Korea (South)
5
Soviet Union
5
Argentina
3
Asia
3
East Asia
3
Germany (West)
3
Spain
3
Africa
2
Canada
2
Communist countries
2
Korea
2
Pakistan
2
Poland
2
Southeast Asia
2
Australia
1
Developing countries
1
European Economic Community countries
1
Hungary
1
Italy
1
Korea (North)
1
Macau (China : Special Administrative Region)
1
Macau (Special Administrative Region)
1
Netherlands
1
Québec (Province)
1
Russia
1
Scandinavia
1
Sweden
1
Yugoslavia
1