Region
United States
United States --
Europe --
4
China
3
Europe
3
Japan
3
Japan --
3
Soviet Union
3
Soviet Union --
3
ASEAN countries
2
ASEAN countries --
2
Asia
2
Asia --
2
Asia, Southeastern --
2
Canada
2
Canada --
2
China --
2
European Economic Community countries
2
European Economic Community countries --
2
Pacific Area --
2
Taiwan --
2
Africa, Northeast
1
Africa, Northeast --
1
Asia, Souitheastern
1
Asia, Southeastern
1
Central America
1
Central America --
1
Cuba
1
Cuba --
1
East Asia --
1
Finland
1
Finland --
1
Malaysia
1
Pacific Area
1
Philippines
1
Philippinese --
1
Singapore
1
Singapore --
1
Taiwan
1
Thailand
1
Thailand --
1