Region
United States
7
United States --
4
Canada
3
Singapore
3
Asia
2
North America
2
Singapore --
2
ASEAN countries
1
ASEAN countries --
1
Asia, Southeastern
1
Canada --
1
Canada. Treaties, etc. 1992, Oct.7 --
1
East Asia
1
East Asia --
1
Japan
1
Japan --
1
North America --
1
Pacific Area
1
Southeast Asia
1
Southeast Asia --
1
Thailand --
1