Region
India
10
India --
10
Asia, Southeastern
5
Asia, Southeastern --
4
Asia --
2
Singapore
2
Singapore --
2
Southeast Asia
2
Southeast Asia --
2
Asia
1
China
1
China --
1
Developing countries
1
Developing countries --
1
Malaysia
1
Malaysia --
1
South Asia --
1
Soviet Union
1
Soviet Union --
1
United States
1
United States --
1