Region
United States
2,142
United States --
2,065
China --
123
China
113
United states --
108
Japan
106
Japan --
102
Soviet Union
98
Soviet Union --
95
Europe
74
Europe --
67
Asia
59
Asia --
49
Middle East
47
Great Britain
46
Middle East --
37
Great Britain --
34
East Asia
32
Israel --
31
Latin America
31
Latin America --
31
Developing countries
29
East Asia --
29
Israel
29
India
21
Asia, Southeastern --
19
Developing countries --
19
India --
19
Iran --
19
Iraq
19
Taiwan --
18
United States - --
18
Asia, Southeastern
17
Central America --
17
Iran
16
Iraq --
16
Mexico --
15
Pacific Area
15
Pacific Area --
15
Russia --
15
Australia --
14
Malaysia
14
Malaysia --
14
Russia
14
Russia (Federation) --
14
Southeast Asia
14
Taiwan
14
Afghanistan --
13
Canada --
13
Central America
13
more ...