Region
United States
2,135
Soviet Union
149
Japan
133
Europe, Eastern
83
Hungary
63
China
51
Europe
36
Great Britain
35
Developing countries
32
Asia
25
Latin America
23
Poland
21
Cuba
16
Germany
15
Vietnam
15
Southern States
14
France
13
Romania
13
Washington (D.C.)
13
Africa
12
Communist countries
12
Middle East
12
Israel
11
Russia
11
Czechoslovakia
9
India
9
Canada
8
Europe, Western
8
Southeast Asia
8
Iran
7
Kentucky
7
New York (State)
7
East Asia
6
Massachusetts
6
Nicaragua
6
Pakistan
6
California
5
Caribbean Area
5
Europe, Central
5
Illinois
5
Louisville
5
Pacific Area
5
Southwest, New
5
Arab countries
4
Australia
4
Germany (East)
4
Mexico
4
South Africa
4
Texas
4
West Virginia
4
more ...