Region
United States
73
Puerto Rico
28
Afghanistan
10
Washington (D.C.)
10
Latin America
8
Nigeria
7
Europe, Eastern
6
Mexico
5
Africa
4
Indonesia
4
Zimbabwe
4
Asia, Central
3
Central America
3
China
3
Haiti
3
Iraq
3
Japan
3
Liberia
3
Middle East
3
Philippines
3
Venezuela
3
Africa, Southern
2
Arab countries
2
Argentina
2
Caribbean Area
2
East Asia
2
Hong Kong (China)
2
Hungary
2
Iran
2
Korea
2
Morocco
2
Oklahoma
2
Persian Gulf States
2
Russia (Federation)
2
South Asia
2
Soviet Union
2
Ukraine
2
Africa, Sub-Saharan
1
Africa, West
1
Albania
1
American Samoa
1
Angola
1
Asia
1
Austria
1
Belgium
1
Buenos Aires
1
California
1
Caribbean, English-speaking
1
Congo (Democratic Republic)
1
Côte d'Ivoire
1
more ...