Region
United States --
30
Malaysia --
22
Developing countries --
20
United States
16
India --
11
South Asia --
11
Israel --
10
Developing countries
9
East Asia --
9
Great Britain --
9
China --
8
Former Soviet republics --
8
Malaysia
8
Middle East --
8
India
7
Japan --
7
Singapore --
7
South Africa --
7
Thailand --
7
Asia --
6
Asia, Southeastern --
6
East Asia
6
Europe --
6
Germany (West) --
6
Indonesia --
6
Singapore
6
Soviet Union --
6
Pacific Area --
5
Soviet Union
5
Asia, Southeastern
4
China
4
Europe, Eastern --
4
Germany (West)
4
Pakistan --
4
Russia --
4
South Asia
4
Africa --
3
America --
3
Arab countries --
3
Australia --
3
Central America --
3
Europe
3
Former Soviet republics
3
Germany --
3
Great Britain
3
Hong Kong (China) --
3
Indonesia
3
Israel
3
Korea --
3
Latin America --
3
more ...