Oblast
United States
21
India
15
Developing countries
8
Europe
8
China
5
European Union countries
5
Great Britain
3
Southeast Asia
3
Canada
2
East Asia
2
Germany
2
Jamaica
2
Japan
2
Africa, North
1
Africa, Southern
1
Asia
1
Bangladesh
1
Blízký východ
1
Etats-Unis d'Amérique
1
European Economic Community countries
1
Hawaii
1
Hong Kong
1
Middle East
1
New York
1
Pacific Area
1
South Africa
1
South East Asia
1
Sweden
1
Taiwan
1
Thailand
1
USA
1