Region
United States
2,085
Russia (Federation)
75
China
73
Europe
40
European Union countries
39
Developing countries
25
Asia
23
California
22
Canada
22
Latin America
22
India
19
Mexico
18
Middle East
17
Germany
16
Asia, Central
15
East Asia
13
Great Britain
13
Japan
13
West (U.S.)
13
Iraq
11
Europe, Eastern
10
Ukraine
10
Australia
9
Baltic Sea
9
Pacific Area
9
Iran
8
North America
8
Southeast Asia
8
Alaska
7
Brazil
7
West Virginia
7
Belarus
6
Caspian Sea Region
6
Czech Republic
6
Former Soviet republics
6
South Asia
6
Soviet Union
6
Turkey
6
Azerbaijan
5
Colombia
5
Europe, Western
5
Mediterranean Region
5
Poland
5
Western Hemisphere
5
Africa
4
Africa, West
4
Arab countries
4
Eurasia
4
Lithuania
4
Netherlands
4
more ...