Region
Great Britain
20
Europe
18
European Economic Community countries
14
Soviet Union
10
Russia
7
United States
7
Europe, Eastern
5
China
3
Developing countries
3
Germany
3
India
3
Russia (Federation)
3
Asia, Southeastern
2
Commonwealth of Nations
2
Egypt
2
European Union countries
2
Japan
2
Near East
2
Yugoslavia
2
Africa, North
1
Arab countries
1
Asia, Central
1
Czechoslovakia
1
Europe, Western
1
Finland
1
France
1
Germany (Federal Republic, 1949- )
1
Hungary
1
Indonesia
1
Kerala
1
Latin America
1
North America
1
North Atlantic Ocean
1
North Atlantic region
1
North Sea
1
Northern Ireland
1
Poland
1
Romania
1
South Africa
1
Spain
1
Ukraine
1