Region
United States
18
United States --
8
United states --
4
Great Britain
3
Afghanistan
2
Afghanistan --
2
Developing countries
2
Developing countries --
2
4.240
1
7.150
1
Asia
1
Asia --
1
Indonesia
1
Indonesia --
1
Malaysia
1
Malaysia --
1
Middle East
1
Middle East --
1
Pacific area --
1
Saudi Arabia
1
Saudi Arabia --
1