Region
United States
1,384
New Jersey
226
Pennsylvania
208
Great Britain
129
Europe
91
États-Unis
82
New York (State)
76
China
73
Canada
66
Soviet Union
56
Bolivia
52
France
50
Latin America
42
Japan
39
California
37
West Virginia
37
Developing countries
34
Africa
29
Germany (West)
29
Guatemala
28
Asia
26
Massachusetts
26
Mexico
26
Virginia
26
Germany
23
Italy
22
Russia (Federation)
22
Brazil
21
Colombia
21
Washington (State)
21
Argentina
20
Chile
20
Michigan
20
America
19
European Economic Community countries
19
European Union countries
19
Israel
18
Kenya
18
Pittsburgh (Pa.)
18
Tanzania
18
Venezuela
18
Alaska
17
El Salvador
17
Europe, Eastern
16
Illinois
16
Ohio
16
Middle East
15
New York (N.Y.)
15
Switzerland
15
India
14
more ...