Subject Region
United States
83
Arab countries
69
Europe, Eastern
57
Latin America
54
Africa
50
China
44
Mexico
44
Middle East
35
European Union countries
31
Russia (Federation)
30
Developing countries
29
Korea (South)
29
Chile
23
Spain
23
South Africa
22
Former Soviet republics
20
East Asia
19
Europe
18
Indonesia
18
Africa, Sub-Saharan
16
India
16
Afghanistan
14
Europe, Central
14
Taiwan
14
Ukraine
14
Argentina
12
Egypt
12
Central America
11
Espana
11
Brazil
10
Poland
10
Turkey
9
Hong Kong
8
Hong Kong (China)
8
Portugal
8
Belarus
7
Former communist countries
7
Romania
7
Soviet Union
7
Africa, North
6
Islamic countries
6
Nepal
6
Serbia
6
Western countries
6
America Latina
5
Asia, Central
5
Czech Republic
5
Europe, Southern
5
Haiti
5
Hungary
5
more ...