Región
China
25
Developing countries
25
Europe
22
Great Britain
22
United States
19
European Union countries
17
Africa
13
Asia
13
Europe, Eastern
9
Soviet Union
9
India
8
Turkey
7
East Asia
6
Japan
5
Russia (Federation)
5
Southeast Asia
5
Asia, Central
3
Egypt
3
England
3
Europe, Central
3
France
3
Indonesia
3
Latin America
3
Ukraine
3
Amazon River Region
2
Brazil
2
Former communist countries
2
Greece
2
Italy
2
Korea (South)
2
Malaysia
2
Mediterranean Region
2
Mexico
2
Middle East
2
Nigeria
2
North America
2
Pacific Area
2
Russia
2
South America
2
South Asia
2
Taiwan
2
Zambia
2
Africa, North
1
Africa, Southern
1
Africa, Sub-Saharan
1
Africa, West
1
Australia
1
Balkan Peninsula
1
Bangladesh
1
Bogotá
1
más ...