Region
Great Britain
22
United States
10
Europe
9
European Union countries
9
China
7
France
7
Japan
7
East Asia
5
Germany
4
Africa
3
Developing countries
3
India
3
European Economic Community countries
2
Asia, Southeastern
1
Belgium
1
Ethiopia
1
Europe, Eastern
1
Europe, Western
1
European Union Countries
1
Germany (East)
1
Germany (West)
1
Korea
1
Korea (South)
1
Latin America
1
Netherlands
1
Red River Delta
1
Spain
1
Turkey
1
Vietnam
1