Region
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OECD countries
10
Western countries
10
Communist countries
9
Ecuador
9
Islamic countries
9
Morocco
9
Scandinavia
9
Washington (D.C.)
9
West Bank
9
Algeria
8
California
8
Cambodia
8
Iraq
8
Liberia
8
Malawi
8
Massachusetts
8
New York
8
Persian Gulf Region
8
Persian Gulf States
8
Tunisia
8
Afghanistan
7
Balkan Peninsula
7
Czechoslovakia
7
Europe, Western
7
Haiti
7
Jordan
7
Norway
7
Romania
7
South America
7
Sri Lanka
7
Wisconsin
7
États-Unis
7
Azerbaijan
6
Botswana
6
Confederate States of America
6
Côte d'Ivoire
6
Developed countries
6
Guatemala
6
Honduras
6
Kazakhstan
6
New York (N.Y.)
6
Nicaragua
6
Ohio
6
Scotland
6
Africa, Southern
5
Africa, West
5
Albania
5
Appalachian Region
5
Bulgaria
5
Burkina Faso
5
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