Region
United States --
137
United States
104
Soviet Union --
53
Soviet Union
48
Japan --
27
China --
21
Europe --
19
Great Britain --
17
Asia --
14
Asia
13
Japan
13
United states --
13
Germany --
12
South Africa --
12
China
11
Great Britain
11
Latin America --
11
Asia, Southeastern --
9
Europe
9
South Africa
9
Developing countries
8
East Asia --
8
Germany
8
Asia, Southeastern
7
India
7
India --
7
Israel --
7
Latin America
7
Malaysia --
7
Russia --
7
East Asia
6
France --
6
Indonesia --
6
Malaysia
6
United States - --
6
Australia --
5
Canada --
5
Central America
5
France
5
Germany (West) --
5
Indonesia
5
Israel
5
Middle East --
5
Russia
5
Southeast Asia
5
United Nations
5
Africa, Southern --
4
Central America --
4
Europe, Eastern
4
Europe, Eastern --
4
more ...