Region
United States
277
Europe
49
Germany
48
France
42
Great Britain
26
China
24
Developing countries
12
India
10
Latin America
10
Soviet Union
10
Asia
8
Germany (West)
7
Africa
6
Japan
6
Australia
5
Eastern Europe
5
Europe, Eastern
5
Italy
5
Israel
4
Korea (South)
4
Mexico
4
California
3
Canada
3
Central Europe
3
Europe, Central
3
Russia (Federation)
3
Arab countries
2
Austria
2
Bolivia
2
Central America
2
Chicago
2
Chicago (Ill.)
2
Communist countries
2
Egypt
2
England
2
Illinois
2
Iran
2
Mexican-American Border Region
2
Michigan
2
Middle East
2
Netherlands
2
New Zealand
2
North America
2
OECD countries
2
Poland
2
Scotland
2
South Africa
2
South Asia
2
Southern States
2
Spain
2
more ...