United States 1,423
Europe 122
China 83
European Union countries 57
Japan 54
Russia (Federation) 53
Soviet Union 41
Israel 40
Asia 39
Middle East 37
Canada 35
Afghanistan 34
Southeast Asia 33
Pacific Area 30
East Asia 29
Developing countries 25
Latin America 25
Australia 23
Africa 22
Germany 22
South Asia 22
India 20
Asia, Central 16
Iraq 16
Korea (North) 16
États-Unis 15
Great Britain 15
Iran 15
Mexico 15
Scotland 14
Pakistan 13
Europe, Eastern 12
Taiwan 12
Former Soviet republics 11
Colombia 10
Indonesia 10
Korea (South) 10
France 9
Mexican-American Border Region 9
North America 9
Turkey 9
Balkan Peninsula 8
Saudi Arabia 8
Central Asia 7
Eastern Europe 7
Caribbean Area 6
Europe, Central 6
Malaysia 6
Mediterranean Region 6
Ukraine 6
Africa, West 5
Communist countries 5
Korea 5
Persian Gulf Region 5
Vietnam 5
Western Hemisphere 5
Arctic regions 4
Black Sea Region 4
Central America 4
Central Europe 4
Egypt 4
Europäische Union 4
Islamic countries 4
Nigeria 4
Palestine 4
Russie 4
South Africa 4
Spain 4
USA 4
Verenigde Staten 4
Yemen (Republic) 4
Africa, Sub-Saharan 3
Baltic States 3
Bosnia and Herzegovina 3
Brazil 3
Bulgaria 3
California 3
Caucasus, South 3
European Economic Community countries 3
Georgia (Republic) 3
Great Lakes Region (Africa) 3
Jordan 3
Lebanon 3
Middle East Region 3
Poland 3
South China Sea 3
Sweden 3
Africa, Southern 2
Afrika 2
Allemagne RF 2
Arab countries 2
Arctic Regions 2
Austria 2
Canada, Northern 2
Caspian Sea Region 2
Chiapas (Mexico) 2
Chine 2
Cuba 2
Czech Republic 2
Eurasia 2