Region
United States
646
Soviet Union
155
Europe
145
Great Britain
72
Developing countries
60
China
59
Germany
49
France
35
Japan
31
Russia (Federation)
23
Asia
17
East Asia
17
Latin America
17
India
15
Korea (North)
15
Canada
14
Germany (West)
13
Middle East
13
Africa
12
Europe, Eastern
12
États-Unis
12
Eastern Europe
10
Italy
10
Korea (South)
10
Korea
9
Spain
9
Western countries
8
Australia
7
Germany (East)
7
Turkey
7
Communist countries
6
Islamic countries
6
Southeast Asia
6
Yugoslavia
6
Arab countries
5
Austria
5
Etats-Unis d'Amérique
5
Europe, Western
5
New Zealand
5
Colombia
4
Former Soviet republics
4
Grande-Bretagne
4
Manchuria (China)
4
Mexico
4
Pakistan
4
Afghanistan
3
Bulgaria
3
Czechoslovakia
3
Developed countries
3
Espagne
3
more ...