Region
United States
415
Colorado
131
China
4
European Union countries
4
Japan
4
Germany
3
Africa
2
California
2
Chile
2
Great Britain
2
OECD countries
2
Puerto Rico
2
Taiwan
2
Washington (D.C.)
2
Abū Ẓaby
1
Argentina
1
Australia
1
Canada
1
Developing countries
1
Europe, Eastern
1
Former communist countries
1
Greece
1
Guam
1
India
1
Islamic countries
1
Israel
1
Las Animas County
1
Middle East
1
Netherlands
1
Paraguay
1
Portugal
1
Russia (Federation)
1
San Marino
1
Saudi Arabia
1
Sweden
1
United Arab Emirates
1
Vietnam
1