Region
United States
6
United States --
6
Soviet Union
5
Australia
4
East Asia
4
East Asia --
4
Japan
4
Japan --
4
Australia --
3
ASEAN countries --
2
Asia
2
Asia --
2
Asia, Southeastern
2
Asia, Southeastern --
2
Pacific Area --
2
ASEAN countries
1
China
1
China --
1
Developing countries
1
Developing countries --
1
Europe
1
Europe --
1
European Economic Community countries
1
European Economic Community countries --
1
Malaysia
1
Pacific Area
1
Soviet Union --
1