Region
United States
159
Soviet Union
19
Europe, Eastern
13
Japan
12
Vietnam
8
Cuba
6
Hungary
5
Latin America
5
China
4
Developing countries
4
Europe
4
Middle East
3
Asia
2
Brazil
2
Caribbean Area
2
Central America
2
Chile
2
France
2
Iran
2
Kentucky
2
Louisville
2
Missouri
2
Nicaragua
2
Africa, North
1
Africa, Southern
1
Bolivia
1
Canada
1
Communist countries
1
Comunidad de Estados Independientes
1
Cyprus
1
Europa Oriental
1
Europe, Western
1
Great Britain
1
Grenada
1
Illinois
1
Indonesia
1
Islamic countries
1
Israel
1
Libya
1
Paraguay
1
Philippines
1
Poland
1
Russia
1
Ryukyu Islands
1
South Africa
1
Spain
1
Washington (D.C.)
1
Zimbabwe
1