Region
OECD countries
22
Brazil
7
Africa, West
3
Developing countries
3
Russia (Federation)
3
Sahel
3
Caribbean Area
2
Europe
2
Former Soviet republics
2
Kyrgyzstan
2
Latin America
2
Moldova
2
Poland
2
Russian Federation
2
Canada
1
Greece
1
Mexico
1
Moldova, Republic of
1
O.E.C.D. countries
1
Organisation for Economic Co-operation and Development
1
Organization for Economic Cooperation and Development countries
1
Soviet Union
1
United States
1