Region
United States
18
China
8
Africa
4
Europe
4
Asia
3
Great Britain
3
Australia
2
Canada
2
East Asia
2
Japan
2
Middle East
2
South America
2
Africa, East
1
Africa, Sub-Saharan
1
Bhutan
1
California
1
Czech Republic
1
Europe, Central
1
Europe, Eastern
1
European Union countries
1
Ghana
1
Hong Kong
1
Hungary
1
India
1
Korea (South)
1
Morocco
1
Norway
1
Pacific Area
1
Scandinavia
1
Shanghai
1
Sweden
1
Vietnam
1