Brazil (1979) Brunei (1992) Bulgaria (1994) Canada (1967) People's Republic of China (1990) Costa Rica (1970) Chile (1990) Colombia (1995) Croatia (1996) Cuba (only within Guantanamo Bay ) (1986) Cyprus (1996) Czech Republic (1992) Denmark (1981) Dominican Republic (1996) Ecuador (1997) Egypt (1994) El Salvador (1972) Estonia (1995) Fiji (1996) Finland (1984)