Region
United States --
United States
239
Japan --
26
Soviet Union --
22
Japan
21
Soviet Union
19
China --
14
Europe --
11
United states --
11
China
10
Asia
8
Developing countries
8
Latin America
8
Asia --
7
Europe
7
Latin America --
7
Korea (South)
6
Korea (South) --
6
Central America --
5
European Economic Community countries --
5
Great Britain --
5
Central America
4
East Asia --
4
Great Britain
4
Israel --
4
Mexico
4
Mexico --
4
Russia (Federation)
4
Russia (Federation) --
4
Russia --
4
United Nations
4
Australia --
3
Canada
3
Canada --
3
Caribbean Area --
3
Cuba
3
Cuba --
3
Developing countries --
3
East Asia
3
European Economic Community countries
3
Foreign countries
3
Israel
3
New Zealand
3
New Zealand --
3
Philippines --
3
Russia
3
South Africa
3
South Africa --
3
Afghanistan --
2
Australia
2
more ...