Region
United States
10
United States --
10
Great Britain
4
Great Britain --
4
China --
2
Japan
2
Japan --
2
Australia
1
Australia --
1
Cambodia
1
Cambodia --
1
China
1
Cyprus
1
Cyprus --
1
Developing countries
1
Developing countries --
1
Greece
1
Greece --
1
Iran
1
Iran --
1
Israel
1
Israel --
1
Soviet Union
1
Soviet Union --
1
United Nations
1
United States- --
1