Region
United States
United States --
749
China --
90
China
73
Soviet Union --
67
Soviet Union
66
United states --
47
Asia
41
Japan
41
Japan --
41
Asia --
40
Middle East
38
Middle East --
35
Europe
30
Europe --
30
Israel --
29
Israel
26
Great Britain --
20
Latin America
19
East Asia
18
India
18
Iran --
18
Latin America --
18
Developing countries
17
Great Britain
17
India --
17
East Asia --
16
Iran
16
Taiwan --
16
Iraq
14
Iraq --
13
Russia (Federation) --
13
Taiwan
13
Asia, Southeastern
12
Asia, Southeastern --
12
Central America --
12
Russia (Federation)
12
Central America
11
Russia
10
Russia --
10
Vietnam --
10
Afghanistan --
9
Cuba
9
Cuba --
9
Developing countries --
9
Pakistan --
9
Vietnam
9
Afghanistan
8
Arab countries --
8
Indonesia --
8
more ...