Oblast
China
4
Europe, Eastern
3
Latin America
3
United States
3
Ecuador
2
Germany
2
Great Britain
2
India
2
Korea (South)
2
Africa
1
Africa, West
1
Albania
1
America
1
Argentina
1
Bangladesh
1
Caribbean Area
1
Chile
1
Czech Republic
1
Developing countries
1
East Asia
1
Europe, Central
1
European Union countries
1
Foreign countries
1
Ireland
1
Israel
1
Mauritius
1
Poland
1
Scotland
1
South Asia
1
Southeast Asia
1
Southeat Asia
1
Soviet Union
1
Spain
1
Switzerland
1