Region
United States
122
Europe
24
Canada
17
Developing countries
17
Pennsylvania
14
Asia
11
Great Britain
11
Australia
10
Caribbean Area
10
China
10
India
10
Latin America
10
Germany
9
Greece
8
Japan
8
America
7
Nigeria
7
Africa
6
North America
6
Spain
6
Europe, Eastern
5
France
5
European Economic Community countries
4
Middle East
4
New Jersey
4
New York (State)
4
Polar Regions
4
Rome
4
Brazil
3
Commonwealth countries
3
England
3
Florida
3
Italy
3
Mexico
3
Peru
3
Sweden
3
Trinidad and Tobago
3
Africa, Southern
2
Alaska
2
Botswana
2
Carpathian Mountains
2
Communist countries
2
Czechoslovakia
2
Earth (Planet)
2
East Asia
2
Europe, Northern
2
European Union countries
2
Former Soviet republics
2
Germany (West)
2
Guatemala
2
more ...