Región
Developing countries
26
China
25
Great Britain
23
Europe
22
United States
19
European Union countries
18
Africa
16
Asia
13
India
10
Europe, Eastern
9
Latin America
9
Soviet Union
9
Turkey
8
América Latina
6
East Asia
6
Russia (Federation)
6
Japan
5
Southeast Asia
5
Amazon River Region
3
Asia, Central
3
Colombia
3
Egypt
3
England
3
Europe, Central
3
Former communist countries
3
France
3
Indonesia
3
Italy
3
Mediterranean Region
3
Mexico
3
Nigeria
3
Ukraine
3
Balkan Peninsula
2
Brazil
2
Greece
2
Korea (South)
2
Malaysia
2
Middle East
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
Argentina
1
más ...