Región
China
18
United States
7
Great Britain
6
Asia
4
Europe, Eastern
4
European Union countries
4
Russia (Federation)
4
Soviet Union
4
Egypt
3
Europe
3
India
3
Japan
3
Africa
2
Caribbean Area
2
Korea (South)
2
Latin America
2
South America
2
Asia, Central
1
Brazil
1
Developing countries
1
Germany
1
Haiti
1
Iceland
1
Ireland
1
Italy
1
Kerala
1
Kerala (India)
1
Mexico
1
Poland
1
Russia
1
Saudi Arabia
1
South Africa
1
Turkey
1
Ukraine
1
Zimbabwe
1