Region
United States
239
Developing countries
42
Latin America
27
China
14
Great Britain
14
Europe
10
Brazil
9
Europe, Eastern
7
India
7
OECD countries
7
Soviet Union
6
Germany
5
Japan
5
Korea (South)
5
Malaysia
5
Canada
4
Colombia
4
Eastern Europe
4
New York
4
New York (State)
4
Ontario
4
South Africa
4
Chile
3
East Asia
3
Egypt
3
Former Soviet republics
3
Mexico
3
Verenigde Staten
3
Australia
2
Cuba
2
Europe, Central
2
Europe, Western
2
Indonesia
2
Ireland
2
Italy
2
Korea
2
Nepal
2
Nigeria
2
Peru
2
Sweden
2
Taiwan
2
Thailand
2
Western Europe
2
Afghanistan
1
Africa
1
Appalachian Region
1
Argentina
1
Asia
1
Asia, Central
1
Bolivia
1
more ...