Region
United States --
23
China --
22
Japan --
17
United States
17
China
14
Asia --
11
Latin America --
11
Indonesia --
9
Soviet Union --
9
Africa --
8
Europe, Eastern --
8
Korea (South) --
8
Asia
7
Europe --
7
Malaysia --
7
Australia --
6
Indonesia
6
Pacific Area --
6
Taiwan --
6
Former Soviet republics --
5
Latin America
5
Russia (Federation) --
5
East Asia --
4
Europe, Eastern
4
Great Britain --
4
Japan
4
Malaysia
4
New Zealand --
4
Africa
3
Asia, Southeastern --
3
Burma
3
Chile --
3
Developing countries
3
Developing countries --
3
East Asia
3
Egypt --
3
Estonia
3
Estonia --
3
Kenya --
3
Korea (South)
3
Philippines --
3
Singapore --
3
Thailand --
3
Australia
2
Bulgaria --
2
Burma --
2
Chile
2
Communist countries --
2
Cuba
2
Cuba --
2
more ...