Region
United States
401
Great Britain
64
India
45
Tropics
39
Australia
37
Rwanda
32
Japan
31
China
30
California
29
Philippines
23
England
20
Nigeria
20
Canada
19
Developing countries
17
Southern States
17
Indonesia
16
New York (State)
14
Middle West
13
Africa
12
Northwest, Pacific
12
Tibet Autonomous Region
11
États-Unis
10
Northeastern States
10
South Africa
10
Thailand
10
Brazil
9
Europe
9
France
9
North America
9
Ecuador
8
Mexico
8
Pennsylvania
8
Africa, Southern
7
Kenya
7
Nepal
7
North Carolina
7
Soviet Union
7
États-Unis
7
Amazon River Region
6
Argentina
6
British Columbia
6
East (U.S.)
6
Germany
6
Pacific Northwest
6
Spain
6
Alaska
5
Australie
5
Foreign countries
5
Israel
5
Italy
5
more ...