Region
Europe
14
Great Britain
9
European Economic Community countries
8
United States
5
Europe, Eastern
4
Germany
3
Soviet Union
3
South Africa
2
Asia, Southeastern
1
China
1
Commonwealth of Nations
1
Czechoslovakia
1
Developing countries
1
Egypt
1
European Union countries
1
France
1
Germany (West)
1
Hungary
1
North America
1
Poland
1
Russia
1
Russia (Federation)
1
Spain
1
Ukraine
1