Region
United States
25
OECD countries
12
Great Britain
9
Australia
8
Developing countries
8
Europe
8
Africa
7
America
5
China
5
India
5
Pakistan
4
Asia
3
États-Unis
3
Japan
3
Latin America
3
Pays de l'Organisation de coopération et de développement économiques
3
Romania
3
Royaume-Uni
3
South Africa
3
Afrique
2
Brazil
2
Canada
2
Caribbean Area
2
Croatia
2
Eastern Europe
2
Europe centrale
2
Europe orientale
2
Europe, Eastern
2
European Union countries
2
Germany
2
Ireland
2
Korea (South)
2
New South Wales
2
Norway
2
Saudi Arabia
2
Slovakia
2
Afrika
1
Afrique du Sud
1
Allemagne
1
Appalachian Region
1
Argentina
1
Asie
1
Australie
1
Àfrica
1
Bahrain
1
Belgium
1
Boston Metropolitan Area
1
Boston Metropolitan Area (Mass.)
1
Central Europe
1
Chile
1
more ...