Year % of commercial service imports 1977 2.7163969035890205 1978 2.8267868641339358 1979 2.4973089343380006 1980 2.596729158356609 1981 3.6305148201759967 1982 3.8093855116222763 1983 4.642079878264931 1984 4.253729220076131 1985 2.2433758329172764 1986 3.431617329175175 1987 3.247251864059495 1988 3.2143884892086327 1989 3.3519647195998945 1990 3.359986412071963 1991 3.557712194688019 1992 4.4230751648764235 1993 3.903281155495988 1994 2.836720605448465 2017 9.093711351492411 2018 9.852935035208048 2019 12.8089907946251 2020 8.743344637150189