Region
United States
30
Germany
6
Great Britain
5
France
4
Western countries
3
Soviet Union
2
Benin
1
China
1
Developing countries
1
Europe
1
Former Soviet republics
1
Germany (East)
1
Germany (West)
1
India
1
Indonesia
1
Ireland
1
Italy
1
Japan
1
Mediterranean Region
1
Pakistan
1
Paris
1
Paris (France)
1
Russia
1
Southern States
1
Spain
1
Texas
1
Unted States
1