Region
United States --
34
Europe --
26
United States
24
Soviet Union --
20
China --
17
Europe
13
Great Britain --
12
Soviet Union
12
Europe, Eastern --
10
Indonesia --
10
Japan --
9
South Africa --
9
Europe, Eastern
8
Great Britain
8
Africa --
7
China
7
Indonesia
7
Middle East --
7
Arab countries --
6
France --
6
Latin America --
6
South Africa
6
Asia --
5
Germany (West) --
5
Africa
4
Argentina --
4
Asia
4
Egypt
4
France
4
Germany --
4
India --
4
Latin America
4
Nigeria --
4
Philippines --
4
Russia (Federation) --
4
Sudan --
4
Egypt --
3
Former Soviet republics --
3
Germany (West)
3
India
3
Iran
3
Iran --
3
Japan
3
Mexico
3
Mexico --
3
Sudan
3
Taiwan --
3
Africa, Sub-Saharan
2
Africa, Sub-Saharan --
2
Arab countries
2
more ...