Year % of commercial service imports 1977 43.80014074595358 1978 44.43657437218305 1979 43.62755651237902 1980 43.87315516553658 1981 47.27740403579056 1982 46.91720124203236 1983 55.4385352586015 1984 52.939997428585485 1985 31.387746530283295 1986 49.47158351939994 1987 46.70552391104352 1988 47.95107913669072 1989 50.002279449184414 1990 51.78282540841833 1991 48.49367161158427 1992 59.110713624147635 1993 56.30581568991019 1994 55.44728457447234 2009 52.72768436902109 2010 53.98520552164514 2011 57.858731708249664 2012 54.534456027613984 2013 51.114417892488596 2014 52.213332015475444 2015 30.952698608960773 2016 30.335805023500427 2017 30.436251277280917 2018 39.502228567487364 2019 38.647888724104305 2020 37.11141752400025