Region
Europe
23
European Union countries
22
Africa
12
China
12
United States
9
Asia
6
India
5
Developing countries
4
Germany
4
Great Britain
4
Italy
4
Balkan Peninsula
3
Spain
3
Canada
2
Europe, Western
2
France
2
Ghana
2
Israel
2
Korea (South)
2
Malta
2
Middle East
2
Philippines
2
Romania
2
South Asia
2
Turkey
2
Western Europe
2
Africa, Sub-Saharan
1
Afrique
1
Albania
1
America
1
Arizona
1
Asien
1
Australasia
1
Bangladesh
1
Berlin (Germany)
1
Brazil
1
Developed countries
1
East Asia
1
Egypt
1
Europe, Eastern
1
Former communist countries
1
Freiburg <Breisgau, 2010>
1
Grande-Bretagne
1
Hungary
1
Iran
1
Ireland
1
Islamic countries
1
Japan
1
Mindanao Island
1
Moldova
1
more ...