Region
United States
470
Great Britain
30
Developing countries
17
South Africa
12
Europe
7
États-Unis
7
California
6
New Jersey
6
Africa, Sub-Saharan
4
China
4
Denmark
4
India
4
Japan
4
Latin America
4
North Carolina
4
Prince Edward County
4
Virginia
4
Afrique du Sud
3
Chile
3
England
3
Illinois
3
London
3
New York
3
New York (State)
3
OECD countries
3
Pennsylvania
3
Philadelphia
3
Québec (Province)
3
Washington (State)
3
Barbiana
2
Boston
2
Canada
2
Charlotte
2
Charlotte (N.C.)
2
Chicago
2
Colombia
2
Developed countries
2
Grande-Bretagne
2
Italy
2
Johnson County
2
Kansas
2
Kansas City Metropolitan Area
2
Kentucky
2
Kenya
2
Louisville
2
Louisville (Ky.)
2
Maryland
2
Massachusetts
2
Mississippi
2
Missouri
2
more ...