Region
United States --
40
United States
30
Asia
14
Europe
13
China
12
Japan --
12
Pacific Area
12
China --
11
Europe --
10
Japan
10
Southeast Asia
10
Southeast Asia --
10
Russia (Federation)
9
Russia (Federation) --
9
Asia --
8
Australia --
7
East Asia
7
Pacific Area --
7
United states --
6
Asia, Southeastern
5
Asia, Southeastern --
5
Former Soviet republics --
5
India
5
India --
5
Australia
4
East Asia --
4
Europe, Eastern
4
Europe, Eastern --
4
Former Soviet republics
4
Germany
3
Great Britain --
3
Iran
3
Iran --
3
Russia
3
Russia --
3
Soviet Union
3
Soviet Union --
3
Afghanistan
2
Burma
2
Burma --
2
Germany --
2
Korea (South)
2
Korea (South) --
2
Oceania
2
Pakistan
2
Pakistan --
2
South Asia
2
South Asia --
2
Taiwan --
2
Ukraine --
2
more ...