Region
Japan
United States
Japan --
21
United States --
21
Alaska
1
Developing countries
1
East Asia
1
East Asia --
1
Europe
1
European Union countries
1
Germany
1
Germany (West)
1
Germany --
1
Korea (South)
1
Korea (South) --
1
Pacific Area
1
Russia (Federation)
1
Russia (Federation) --
1
United states --
1