Year % of commercial service exports 1971 7.8125 1972 5.693950177935917 1973 3.0239833159541223 1974 3.647416413373853 1975 1.9913419913419914 1976 2.380952380952381 1977 4.556650246305418 1978 3.8014783526927136 1979 4.503860451815842 1980 6.3237734060203845 1981 7.563981042654029 1982 7.1813994296994945 1983 7.179433805162365 1984 7.591135045567519 1985 6.969696969696971 1986 7.4989311671654555 1987 7.068155111633373 1988 7.873604181515799 1989 8.38001514004542 1990 19.81264637002342 1991 15.800415800415802 1992 8.76923076923077 1993 11.55893536121673 1994 31.343283582089555 1995 5.098919029165817 1996 5.764796310530361 1997 2.1461716937354987 2016 0.304512703508914 2017 0.2561331508871452 2018 0.21059668616433733 2019 0.39535693041649983 2020 0.6037708004734993 2021 1.7578841610154352 2022 3.0032193982956334