Region
United States
102
Marshall Islands
6
Micronesia
5
Micronesia (Federated States)
5
Japan
3
Mexico
3
Netherlands
3
China
2
Czech Republic
2
Great Britain
2
Israel
2
Russia (Federation)
2
Soviet Union
2
Afghanistan
1
Barbados
1
Bulgaria
1
Cambodia
1
Canal Zone
1
Central America
1
Costa Rica
1
Egypt
1
Estonia
1
Fiji
1
Finland
1
Ghana
1
Great Plains
1
Greece
1
Honduras
1
Hungary
1
Jordan
1
Latin America
1
Latvia
1
Liberia
1
Lithuania
1
Nigeria
1
Pakistan
1
Panama
1
Panama Canal (Panama)
1
Poland
1
Romania
1
Singapore
1
Slovakia
1
Slovenia
1
Spain
1
Sweden
1