Region
United States
2,119
Soviet Union
148
Japan
132
Europe, Eastern
82
Hungary
63
China
51
Europe
36
Great Britain
35
Developing countries
32
Asia
25
Latin America
21
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
Europe, Western
8
Southeast Asia
8
Canada
7
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
Texas
4
West Virginia
4
États-Unis
4
more ...