Region
United States
10
Europe
6
Russia (Federation)
4
Western countries
3
Africa
2
Africa, North
2
Arab countries
2
Africa, West
1
Africa, Western
1
Asia
1
Brazil
1
Canada
1
Mexico
1
Middle East
1
Morocco
1
North America
1
Pacific Area
1
Persian Gulf States
1
Scandinavia
1
South China Sea
1
Southern Cone of South America
1