Region
United States
17
China
9
Germany (West)
6
Europe
5
Soviet Union
5
Developing countries
3
Indonesia
3
Russia
3
Asia
2
Germany (East)
2
Korea (North)
2
Southeast Asia
2
Taiwan
2
4.415
1
Asia, Southeastern
1
Communist countries
1
Corée du Nord
1
Corée du Sud
1
Eastern Europe
1
Europa
1
Europe, Eastern
1
États-Unis
1
Formosa
1
Guyana
1
India
1
Italy
1
Japan
1
Korea (South)
1
Latin America
1
Malaysia
1
Peru
1
Russia (Federation)
1
Singapore
1