Year % of commercial service imports 1971 34.26420774811862 1972 31.814237035806073 1973 29.102878097538834 1974 32.37790484760049 1975 34.339649544110344 1976 30.233574092646847 1977 29.351562490280728 1978 29.13250814994825 1979 28.349178507683376 1980 29.61224308261957 1981 31.15717291121844 1982 34.92615809004363 1983 33.724177782473475 1984 31.587296750837154 1985 31.537041931970705 1986 30.37554026036922 1987 30.40371848358562 1988 30.71118881873487 1989 32.334878241157995 1990 31.63667315103534 1991 30.79820797944234 1992 32.144987925475604 1993 31.725586297642067 1994 30.85186300315503 1995 32.49200695192097 1996 33.00947746743026 1997 35.46630069128099 1998 36.40423133707718 1999 37.576496241538386 2000 38.61362704988023 2001 41.157198096842585 2002 38.95231216431412 2003 37.49750878325902 2004 36.89020343394109 2005 37.39183091042985 2006 37.79164557997016 2007 36.691676162943544 2008 36.174682437698664 2009 38.92744564105053 2010 38.98720853723388 2011 40.01959581917666 2012 41.58085193402537 2013 43.28944118813301 2014 44.077943053499155 2015 46.714583733688485 2016 48.6274574129087 2017 49.50093461140811 2018 49.338431456137606 2019 49.982648160517115 2020 57.927594929817005 2021 53.44744958389691 2022 47.089973881867444 2023 49.407248691779444