Region
East Asia
6
Asia
4
Asia --
4
Africa
3
Africa, Sub-Saharan
3
Asia, Southeastern
3
East Asia --
3
ASEAN countries
2
Africa --
2
Africa, Sub-Sahara
2
Canada --
2
Latin America
2
Latin America --
2
Pacific Area
2
Pacific Area --
2
Vietnam
2
Caribbean Area --
1
Caribbran Area
1
Central America
1
Central America --
1
China
1
China --
1
Developing countries
1
El Salvador
1
El Salvador --
1
Gambia
1
Gambia --
1
Ghana
1
India
1
Japan
1
Korea (South)
1
Korea (South) --
1
Sierra Leone
1
Sierra Leone --
1
Tunisia
1
Tunisia --
1
United States
1
United States --
1