Year % of commercial service imports 1977 5.7953526294333635 1978 6.0648601056545 1979 0.10457516339869287 1980 0.8627636880777467 1981 0.8370941912942215 1982 2.101428971700759 1983 4.799403313182073 1984 5.133257312577895 1985 5.028783195886868 1986 6.065992096542686 1987 5.573473331395243 1988 5.486215774930911 1989 5.836817856979946 1990 4.4407894736842035 1991 7.090524710612057 1992 5.0361114495048795 1993 5.109911601345534 1994 1.5247842042693966