Region
United States --
32
United States
18
Caribbean Area
2
Caribbean Area --
2
Central America
2
Central America --
2
Japan
2
Japan --
2
America
1
Asia
1
Canada. Treaties, etc. 1992, Oct.7
1
Europe --
1
Europe, Eastern
1
Europe, Eastern --
1
European Economic Community countries --
1
Singapore
1
Singapore --
1
United States. Congress --
1