Region
United States --
United States
335
United states --
37
China --
33
China
28
Soviet Union --
28
Soviet Union
24
Europe --
23
Japan --
22
Japan
21
Europe
20
Asia
12
East Asia --
11
Great Britain --
11
Middle East
11
Middle East --
11
Asia --
10
East Asia
10
Developing countries
9
Israel
9
Taiwan
9
Taiwan --
9
Israel --
8
Great Britain
7
India
7
India --
7
Latin America
7
Latin America --
6
Developing countries --
5
Iran
5
Mexico
5
Pacific Area
5
Panama
5
Panama --
5
Russia --
5
United Nations
5
Asia, Southeastern
4
Asia, Southeastern --
4
Cambodia --
4
Egypt
4
Egypt --
4
Iran --
4
Iraq
4
Iraq --
4
Mexico --
4
Pacific Area --
4
Pacific area --
4
Russia (Federation) --
4
Southeast Asia
4
Southeast Asia --
4
more ...