Region
United States
104
Europe
15
Soviet Union
14
China
9
Great Britain
6
Iraq
6
Germany
4
Islands of the Pacific
4
Russia
4
East Asia
3
Russia (Federation)
3
Africa, West
2
Canada
2
Former Soviet republics
2
Germany (West)
2
Korea (North)
2
Latin America
2
Mali
2
Pacific Area
2
Afghanistan
1
Africa
1
Albania
1
Arab countries
1
Asia
1
Cambodia
1
Congo (Democratic Republic)
1
Developing countries
1
France
1
Georgia
1
Indian Ocean Region
1
Lebanon
1
Libya
1
Middle East
1
Outer space
1
Pakistan
1
Sierra Leone
1
South Asia
1
Southeast Asia
1
Syria
1