Region
United States
77
Developing countries
9
China
6
European Union countries
4
Great Britain
4
Africa
3
Europe
2
Africa South of the Sahara
1
Africa, Southern
1
Africa, Sub-Saharan
1
Asia
1
Caribbean Area
1
European Economic Community countries
1
Hong Kong
1
India
1
Indiana
1
Islamic countries
1
Italy
1
Korea
1
Poyang Lake
1
Poyang Lake (China)
1
Texas
1
Ukraine
1
Wyoming
1