Region
United States --
115
United States
74
China --
72
China
59
Soviet Union --
44
Soviet Union
30
Great Britain --
26
Asia, Southeastern --
15
Great Britain
15
Asia, Southeastern
14
Japan --
14
Asia --
12
Japan
12
Asia
10
Middle East
10
Middle East --
10
India --
9
India
8
Africa
7
Africa --
7
Russia
7
Russia --
7
Indonesia
6
Indonesia --
6
Vietnam
6
Vietnam --
6
Developing countries --
5
Malaysia
5
Israel
4
Israel --
4
Malaysia --
4
Pakistan --
4
Philippines
4
Philippines --
4
Developing countries
3
Egypt --
3
Europe, Eastern
3
Europe, Eastern --
3
France --
3
Latin America
3
Latin America --
3
Pakistan
3
Thailand
3
Turkey
3
Turkey --
3
Albania
2
Albania --
2
Australia
2
Australia --
2
Bulgaria
2
more ...