Region
United States --
298
United States
191
United states --
28
China
23
China --
23
Soviet Union --
21
Soviet Union
20
Asia
14
Asia --
13
Europe --
13
Japan --
12
Middle East
12
Japan
11
Europe
10
Middle East --
10
Israel
8
Israel --
8
Latin America
8
Latin America --
8
Great Britain --
7
Central America --
5
Asia, Southeastern
4
Asia, Southeastern --
4
Central America
4
East Asia
4
Great Britain
4
2001-
3
Australia --
3
Caribbean Area
3
Caribbean Area --
3
Developing countries --
3
East Asia --
3
Europe, Eastern
3
Europe, Eastern --
3
Foreign countries
3
Indonesia
3
Indonesia --
3
Iran --
3
Islamic countries
3
Malaysia
3
Malaysia --
3
Pacific area --
3
Philippines
3
Philippines --
3
Russia (Federation)
3
Russia (Federation) --
3
Taiwan --
3
Vietnam
3
Vietnam --
3
Afghanistan
2
more ...