Region
United States --
19
United States
14
Soviet Union --
7
Europe --
5
Japan --
4
Soviet Union
4
China
3
China --
3
Europe
3
Israel
3
Russia (Federation)
3
Russia (Federation) --
3
Asia
2
Asia --
2
Canada --
2
East Asia
2
Malaysia
2
Africa, North
1
Africa, North --
1
Arab countries
1
Australia --
1
Cambodia
1
Caribbean Area
1
Caribbean Area --
1
Developing countries --
1
East Asia --
1
Former Soviet republics
1
Former Soviet republics --
1
France --
1
Great Britain
1
Great Britain --
1
Hungary
1
Hungary --
1
Israel --
1
Italy --
1
Japan
1
Korea
1
Korea (North) --
1
Korea (South)
1
Korea --
1
Korea(South) --
1
Middle East
1
Middle East --
1
Oceania
1
Palestine --
1
Romania
1
Romania --
1
Somalia
1
Thailand
1
Thailand --
1
more ...