Region
Great Britain
33
United States
7
Europe
6
Soviet Union
6
Developing countries
4
England
4
Africa
2
France
2
Russia
2
Africa, Sub-Saharan
1
Asia, Southeastern
1
Europe, Eastern
1
European Economic Community countries
1
Germany (West)
1
GreatBritain
1
London
1
Middle East
1
North America
1
North Atlantic region
1
Northern Ireland
1
Spain
1