Region
United States --
31
Great Britain --
7
United States
7
Malaysia
4
Malaysia --
4
United states --
4
China --
2
Israel --
2
Soviet Union --
2
Canada --
1
Czechoslovakia
1
Czechoslovakia --
1
Developing countries
1
Developing countries --
1
European Union Countries --
1
European Union countries --
1
Foreign countries
1
France --
1
Great Britain
1
India --
1
Latin America
1
Latin America --
1
Malaysia --
1
Newly independent states --
1
Singapore
1
Singapore --
1
Soviet Union
1
United States - --
1