Year % of commercial service imports 1977 30.78823907364221 1978 31.506108653111916 1979 36.545140695068575 1980 36.573115410019604 1981 30.755995673698607 1982 30.901735411392075 1983 29.781130068775823 1984 31.59845625449815 1985 34.52234302809938 1986 38.25951368810107 1987 39.560255100376644 1988 33.703806211564874 1989 27.319954928533946 1990 31.843165796622266 1991 24.5580606068879 1992 27.560153409446436 1993 42.4712925888143 1994 37.98103752023139 1995 42.55569914611418 1996 47.18955166571197 1997 39.069548839061724 1998 38.009105794347334 1999 45.36249541509236 2000 46.299526962554125 2001 45.87756222340966 2002 47.23223428267158 2003 40.28695858442602 2005 37.08780916941122 2006 35.222827149215604 2007 30.043680698455688 2008 26.167069875570974 2009 31.28906647065204 2010 31.45629990930905 2011 31.88811546879573 2012 31.41255991759629 2013 33.07737217676668 2014 35.7213953487879 2015 32.12722138210346 2016 31.706564366189596 2017 37.37590190149189 2018 41.12485748457118 2019 42.340250291032376 2020 44.59866502650994 2021 37.98323620633319 2022 31.395021485471325