Region
United States
United States --
Singapore
4
Singapore --
4
Australia --
2
Canada
2
Japan
2
Japan --
2
Asia
1
Australia
1
Canada --
1
Canada. Treaties, etc. 1992, Oct.7
1
European Union Countries
1
European Union countries
1
European Union countries --
1
Korea ()South) --
1
Korea (South)
1
Korea (South) --
1
Southeast Asia
1
Southeast Asia --
1
United States. Congress --
1