Region
United States
1,448
Great Britain
104
Japan
59
California
55
Germany
43
Canada
38
Developing countries
38
États-Unis
35
India
34
Massachusetts
32
Europe
29
New York (State)
29
Pennsylvania
26
England
24
North Carolina
24
Soviet Union
22
France
20
Cambridge
19
New York
18
China
17
États-Unis
14
North America
13
European Union countries
12
Philadelphia
12
Grande-Bretagne
11
Russia (Federation)
11
London
10
Italy
9
Korea (South)
9
Asia
8
Australia
8
Korea
8
Los Angeles County
8
Paris
8
Indonesia
7
Mexico
7
West (U.S.)
7
Africa
6
Illinois
6
New York (N.Y.)
6
New Zealand
6
Ohio
6
Pittsburgh
6
South Africa
6
Switzerland
6
Chine
5
Malaysia
5
Pacific Area
5
Tropics
5
Vietnam
5
more ...