Region
United States --
15
United States
14
Soviet Union
4
Soviet Union --
4
Asia
2
Australia
2
Australia --
2
Europe
2
Europe --
2
New Zealand
2
New Zealand --
2
America
1
Asia --
1
Cyprus --
1
Latin America
1
Latin America --
1
Near East
1
Near East --
1
Pacific area
1
Pacific area --
1
Philippines
1
Philippines --
1
Russia
1
Russia (Federation)
1
Russia (Federation) --
1
Turkey
1
Turkey --
1