Region
Europe
13
Asia
9
United States
9
United States --
8
Asia, Southeastern
7
Asia, Southeastern --
7
Europe --
7
Asia --
6
Pacific Area
6
Pacific Area --
6
East Asia --
5
East Asia
4
Japan
4
Japan --
4
Latin America
4
Southeast Asia
4
Southeast Asia --
4
Developing countries
3
Europe, Eastern
3
Latin America --
3
Arab countries
2
Canada --
2
China --
2
Developing countries --
2
Europe, Eastern --
2
European Economic Community countries
2
Great Britain
2
India
2
India --
2
Indonesia
2
Indonesia --
2
Malaysia
2
Malaysia --
2
North America
2
Soviet Union
2
Soviet Union --
2
ASEAN countries
1
ASEAN countries --
1
Africa
1
Africa --
1
Africa, Southern --
1
Africa, Sub-Saharan
1
America
1
America --
1
Antarctica
1
Antarctica --
1
Arctic regions --
1
Argentina
1
Argentina --
1
Asia, Southeaster
1
more ...