Region
United States
United States --
510
China --
49
China
42
Japan
42
Japan --
41
Soviet Union
38
Europe
32
Soviet Union --
30
United states --
26
Asia
21
Europe --
21
Great Britain
21
Middle East
18
Middle East --
17
East Asia
15
Asia --
14
East Asia --
14
Great Britain --
13
India
13
India --
11
Israel --
11
Taiwan --
11
Developing countries
10
Taiwan
10
Iraq
9
Israel
9
Southeast Asia
9
Southeast Asia --
9
Latin America
8
Latin America --
7
Malaysia
7
Malaysia --
7
Panama
7
Panama --
7
Afghanistan --
6
Iran --
6
Iraq --
6
Pacific Area
6
Pacific Area --
6
Russia (Federation) --
6
Asia, Southeastern
5
Asia, Southeastern --
5
France
5
Iran
5
Mexico
5
Mexico --
5
Russia (Federation)
5
Russia --
5
United states
5
more ...