Region
United States
United States --
304
China --
22
Japan
22
China
21
Japan --
19
Soviet Union --
19
Soviet Union
18
Europe
15
Great Britain
15
Asia
14
United states --
13
Asia --
12
Developing countries
11
Europe --
10
Great Britain --
10
Israel --
10
Israel
9
Latin America
9
Latin America --
9
Philippines
9
Philippines --
9
Middle East
7
Developing countries --
6
Middle East --
6
Mexico --
5
Afghanistan
4
East Asia
4
Malaysia
4
Mexico
4
Afghanistan --
3
Canada
3
East Asia --
3
Iran
3
Iran --
3
Iraq --
3
Korea --
3
Malaysia --
3
Palestine
3
Palestine --
3
Panama
3
Panama --
3
Russia
3
Russia --
3
Southeast Asia
3
Vietnam
3
Vietnam --
3
Africa
2
Africa --
2
Australia
2
more ...