Region
United States
36
Korea (South)
4
India
3
Jordan
3
Czech Republic
2
Denmark
2
Russia (Federation)
2
Slovakia
2
Australia
1
Bangladesh
1
Canada
1
Chile
1
Ethiopia
1
Europe
1
European Union countries
1
France
1
Great Britain
1
Greenland
1
Italy
1
Kiribati
1
Netherlands
1
North Macedonia
1
Norway
1
Nuclear energy
1
Oman
1
Outer space
1
Poland
1
Singapore
1
South Africa
1
Sweden
1
Switzerland
1
Ukraine
1