Region
United States
4,002
China
108
Japan
54
Russia (Federation)
53
Mexico
29
Bosnia and Herzegovina
24
Developing countries
22
Taiwan
21
Europe
19
Iraq
16
Korea (South)
16
Former Soviet republics
15
Asia
14
Iran
14
Korea (North)
14
Washington (D.C.)
14
Africa
13
Canada
12
Haiti
12
Cuba
11
European Union countries
11
North America
11
Middle East
10
Vietnam
10
Caribbean Area
9
Israel
9
Africa, Sub-Saharan
7
Alaska
6
America
6
Asia, Central
6
Indonesia
6
Jordan
6
Latin America
6
Saudi Arabia
6
Central America
5
Chile
5
Colombia
5
East Asia
5
Florida
5
India
5
Pacific States
5
Pakistan
5
Ukraine
5
Arctic National Wildlife Refuge (Alaska)
4
Armenia (Republic)
4
Azerbaijan
4
California
4
Chechni︠a︡ (Russia)
4
Hong Kong (China)
4
Nicaragua
4
more ...