Region
United States
33
Afghanistan
14
Europe
7
Pakistan
7
Balkan Peninsula
4
China
4
Europe, Eastern
4
Russia (Federation)
4
Albania
3
Croatia
3
Libya
3
West Indies (Federation)
3
Yemen (Republic)
3
Czech Republic
2
Hungary
2
Poland
2
Baltic States
1
Bosnia and Herzegovina
1
Bulgaria
1
Estonia
1
Europe, Central
1
Kosovo (Republic)
1
Latvia
1
Lithuania
1
Middle East
1
North Atlantic Region
1
North Pacific Ocean
1
Romania
1
Slovakia
1
Slovenia
1
Somalia
1
Taiwan
1
Washington (D.C.)
1
Windward Islands (West Indies)
1