Region
United States
2,163
China
55
Developing countries
34
Europe
25
Japan
18
European Union countries
16
Germany
15
India
15
Colorado
14
Asia
11
Great Britain
11
Africa
10
Outer space
9
Latin America
8
California
7
Washington (State)
7
Australia
6
France
5
Islamic countries
5
Mexican-American Border Region
5
New York (State)
5
Russia (Federation)
5
Texas
5
Arab countries
4
Former Soviet republics
4
Mexico, Gulf of
4
Ohio
4
Pacific Area
4
U.S. states
4
Africa South of the Sahara
3
Alaska
3
Europe, Eastern
3
Italy
3
Korea (South)
3
Maryland
3
Michigan
3
Middle East
3
New Hampshire
3
New Jersey
3
North America
3
Norway
3
South Africa
3
Africa, Sub-Saharan
2
Arizona
2
Bangladesh
2
Brazil
2
Delaware
2
East Asia
2
Eurasia
2
Europe, Western
2
more ...