Region
United States
60
Europe
5
China
3
European Union countries
3
Japan
3
Mexican-American Border Region
3
Australia
2
Caribbean Area
2
Germany (West)
2
Great Britain
2
Illinois
2
OECD countries
2
Asia
1
Brazil
1
Canada
1
Chicago
1
Developed countries
1
England
1
Finland
1
India
1
Italy
1
London
1
Norway
1
Pennsylvania
1
Philadelphia
1
Pune
1
Québec (Province)
1
Soviet Union
1
Sweden
1