Region
United States
United States --
China --
34
Soviet Union --
28
Soviet Union
27
China
26
Japan
26
Japan --
26
United states --
22
Europe
20
Europe --
19
Middle East
14
Middle East --
14
East Asia
13
East Asia --
13
Israel --
13
Asia
12
Great Britain --
12
Israel
12
Asia --
10
Developing countries
10
Great Britain
10
Taiwan
10
Taiwan --
10
India
8
India --
8
Iraq
8
Arab countries --
7
Iran --
7
Latin America
7
Panama
7
Panama --
7
Southeast Asia
7
Southeast Asia --
7
Iran
6
Iraq --
6
Korea
6
Korea --
6
Latin America --
6
Afghanistan --
5
Cambodia --
5
Pacific Area
5
Pacific Area --
5
Russia (Federation) --
5
Afghanistan
4
Arab
4
Asia, Southeastern
4
Asia, Southeastern --
4
Developing countries --
4
Egypt
4
more ...