Year % of commercial service imports 1976 35.24299396949273 1977 43.93675298804781 1978 57.863370488908515 1979 18.579136690647488 1980 14.779687808733456 1981 19.716136994754706 1982 24.347236351305526 1983 20.12165450121654 1984 21.36084774121585 1985 22.86981311371555 1986 27.683873915029693 1987 30.626973387460538 1988 41.8018018018018 1989 35.52522746071132 1990 32.757223872535775 1991 32.09328151027208 1992 28.785417794621907 1993 43.417213712618526 1994 54.57217504898759 1995 36.13138686131387 1996 31.252155915833043 1997 37.90069138906348 1998 26.487747957992994 1999 0.7874015748031411 2000 1.0779961953075485