Region
United States
4
Canada
3
Developing countries
2
Great Britain
2
Argentina
1
Asie du Sud-Est
1
Australia
1
Brazil
1
China
1
Europe
1
Europe centrale
1
Europe orientale
1
France
1
Germany
1
Großbritannien
1
India
1
Indonesia
1
Ireland
1
Islamic countries
1
Italy
1
Japan
1
Korea (South)
1
Mexico
1
Norway
1
Royaume-Uni
1
Russia
1
Saudi Arabia
1
South Africa
1
Southeast Asia
1
Spain
1
Turkey
1
USA
1