Region
United States
111
Europe
22
Asia
13
Pennsylvania
13
China
11
Africa
9
Australia
9
Italy
9
Germany
8
Developing countries
7
India
7
Spain
7
Canada
6
France
6
Great Britain
6
Latin America
6
Middle East
6
Indian Ocean
5
Japan
5
Southeast Asia
5
Soviet Union
5
European Economic Community countries
4
North America
4
Pacific Area
4
Sun
4
Tropics
4
America
3
Antarctica
3
British Columbia
3
Earth (Planet)
3
Europe, Eastern
3
Mediterranean Region
3
Mexico
3
Nigeria
3
Northeastern States
3
South America
3
Utah
3
Yugoslavia
3
Austria
2
Brazil
2
California
2
Caribbean Area
2
Central America
2
Connecticut
2
Czechoslovakia
2
East Asia
2
Egypt
2
European Union countries
2
Florida
2
Greece
2
more ...