Region
Africa, North
1
Asia
1
Australia
1
Cameroon
1
Canada
2
China
2
Developing countries
1
England
2
Europe
5
Europe, German-speaking
1
France
1
Germany
3
Guyana
1
Huasteca Region (Mexico)
3
India
2
Indonesia
2
Ireland
4
Japan
1
Korea
1
Mexico
10
Mexico City
3
Morelos (Mexico : State)
3
Puerto Rico
2
Scotland
2
Spain
1
Trinidad and Tobago
2
Turkey
4
United States
5
Western countries
1