Year % of commercial service imports 1977 46.17031920604793 1978 43.58174366709292 1979 46.58161308853143 1980 49.39717880358397 1981 52.19182825838764 1982 51.64320289879157 1983 49.76749802549765 1984 49.931075795283824 1985 47.55371201409896 1986 45.4593944546901 1987 47.035019998239626 1988 47.48067601227873 1989 49.80534327782728 1990 50.63974753966132 1991 48.57922433979582 2005 44.536240920829265 2006 44.305489881020634 2007 44.07357810482064 2008 44.068758788451596 2009 42.615446057268066 2010 42.646277830996404 2011 42.873953801841076 2012 45.518849822871815 2013 43.61152411903936 2014 42.262905040578254 2015 38.96361991784322 2016 37.768969897728226 2017 37.30959528527472 2018 38.170729798854644 2019 37.087174010995184 2020 43.18007875840681 2021 42.260052432894426 2022 42.70103120501378