Alue
United States
382
Great Britain
165
Japan
70
China
51
Europe
42
Soviet Union
40
India
38
France
33
Germany
27
England
26
Developing countries
25
Pennsylvania
21
Mexico
20
Massachusetts
19
Southern States
19
Canada
17
New England
14
New York (State)
14
South Africa
14
East Asia
13
Italy
13
North Carolina
11
Africa
10
Brazil
10
Latin America
10
California
8
North America
8
Scotland
8
Taiwan
8
Indonesia
7
Malaysia
7
Pittsburgh
7
Spain
7
European Economic Community countries
6
États-Unis
6
Germany (West)
6
Ohio
6
Pakistan
6
Birmingham
5
Guatemala
5
Illinois
5
Korea (South)
5
Nigeria
5
Pittsburgh (Pa.)
5
Russia
5
South Carolina
5
West (U.S.)
5
Africa, Southern
4
Asia
4
Berlin
4
lisää ...