Region
United States
528
New Jersey
82
Pennsylvania
55
États-Unis
53
China
46
Russia (Federation)
41
Soviet Union
39
India
37
Japan
29
Great Britain
25
Canada
22
Europe
21
New York (State)
16
West Virginia
13
European Union countries
12
Washington (D.C.)
12
France
11
Africa
10
Cuba
10
New Mexico
10
Germany
9
Latin America
9
Caribbean Area
8
Hawaii
8
Louisiana
8
Missouri
8
Vermont
8
Wyoming
8
Florida
7
Hungary
7
Illinois
7
Iran
7
New Hampshire
7
New York
7
Poland
7
Russia
7
Virginie-Occidentale
7
Yugoslavia
7
Alaska
6
Argentina
6
Europe, Eastern
6
Kentucky
6
Massachusetts
6
Taiwan
6
Africa, Sub-Saharan
5
Albania
5
Bolivia
5
California
5
Connecticut
5
Delaware
5
more ...