Region
United States
138
China
9
Japan
7
European Union countries
6
Rwanda
6
Estonia
5
Latvia
5
Romania
5
Indonesia
4
Mexico
4
Bulgaria
3
Egypt
3
Jamaica
3
Lithuania
3
Mongolia
3
Russia (Federation)
3
Sri Lanka
3
Tunisia
3
Uruguay
3
Albania
2
Argentina
2
Armenia (Republic)
2
Belarus
2
Chile
2
Czechoslovakia
2
Côte d'Ivoire
2
Ecuador
2
Georgia (Republic)
2
Haiti
2
Jordan
2
Kazakhstan
2
Kenya
2
Korea (South)
2
Kyrgyzstan
2
Moldavia
2
Moldova
2
Pakistan
2
Panama
2
Poland
2
Saudi Arabia
2
Singapore
2
Trinidad and Tobago
2
Ukraine
2
Africa
1
Africa, North
1
Azerbaijan
1
Bahrain
1
Bangladesh
1
Bolivia
1
Brazil
1
more ...