Region
United States
14
United States --
10
Developing countries --
9
Developing countries
8
China
6
Europe
6
Europe --
6
China --
5
India
5
East Asia
4
East Asia --
4
Europe, Eastern --
4
Israel --
4
Japan
4
Latin America
4
Asia, Southeastern
3
Asia, Southeastern --
3
Europe, Eastern
3
Indonesia
3
Indonesia --
3
Japan --
3
Latin America --
3
Taiwan
3
Thailand
3
Africa
2
Africa --
2
Arab countries
2
Arab countries --
2
Germany (West)
2
Hungary --
2
India --
2
Iran --
2
Israel
2
Peru --
2
South Africa --
2
South Asia
2
Soviet Union --
2
Spain
2
Spain --
2
Thailand --
2
Africa, Sub-Saharan
1
Africa, Sub-Saharan --
1
Argentina --
1
Asia
1
Asia --
1
Asia, Central
1
Asia, Central --
1
Baltic States
1
Belize
1
Belize --
1
more ...