Region
United States
173
China
14
European Union countries
7
Great Britain
6
Africa
4
Russia (Federation)
4
Spain
3
Europe
2
Arizona
1
Asia
1
Atlantic Ocean Region
1
Authorship
1
Canada
1
Colombia
1
Costa Rica
1
East Asia
1
England
1
Geneva (Switzerland)
1
Germany
1
Japan
1
London (England)
1
Mars (Planet)
1
Montréal
1
Québec (Province)
1
South Africa
1
Surrey
1
Taiwan
1
États-Unis
1