Region
Developing countries
106
Soviet Union
99
United States
60
Great Britain
41
Europe, Eastern
33
China
32
Europe
32
Africa
31
Latin America
29
India
28
Ireland
28
Eastern Europe
23
Japan
23
France
20
Yugoslavia
19
Communist countries
16
Russia
15
Asia
14
Brazil
14
European Economic Community countries
14
Pakistan
13
Southeast Asia
13
Canada
12
Mexico
12
Caribbean Area
10
Central America
10
Ghana
10
Asia, Southeastern
9
Australia
9
Peru
9
Russia (Federation)
9
Singapore
9
Sweden
9
Africa, Sub-Saharan
8
Colombia
8
Germany (West)
8
Malaysia
8
Chile
7
Nigeria
7
East Asia
6
Etats-Unis
6
Greece
6
Israel
6
Taiwan
6
Tanzania
6
USA
6
Argentina
5
Cuba
5
Estados Unidos
5
Grande-Bretagne
5
more ...