Ámbito geográfico
United States
34
China
27
Europe
23
Africa
18
Latin America
15
Australia
13
Asia
11
Canada
11
Mexico
11
European Union countries
8
Italy
8
Japan
8
États-Unis
8
Developing countries
7
Germany
7
Pacific Area
7
Brazil
6
Great Britain
6
India
6
Middle East
6
Turkey
6
Estados Unidos
5
Europe, Eastern
5
France
5
Poland
5
Soviet Union
5
South Africa
4
Spain
4
Syria
4
Afrique
3
Baltic States
3
Central Europe
3
Chine
3
Colombia
3
Denmark
3
Eastern Europe
3
Europe, Central
3
Indonesia
3
Iran
3
Ireland
3
Mexican-American Border Region
3
Netherlands
3
North America
3
Pologne
3
Russia
3
Russia (Federation)
3
South America
3
Southeast Asia
3
Taiwan
3
Ukraine
3
más…