Year % of commercial service imports 1977 24.992219109866138 1978 21.553398058252345 1979 22.111553784860625 1980 23.639455782312865 1981 14.780181437543574 1982 15.198315198315186 1983 31.43655088148026 1984 26.98930578212802 1985 27.925225017308907 1986 16.8277837450769 1987 31.642189586114718 1988 53.82252559726955 1989 51.68463611859826 1990 45.749142203583766 1991 62.623802565351546 1992 21.647751155947763 1993 17.890092258323385 1994 17.860300618921322 1995 14.95546179090485 1996 9.409120102761728 1997 38.87147335423199 1998 43.209470568891845 1999 45.31971796742032 2000 48.71165644171779 2001 46.16182572614108 2002 43.63365599404319 2003 36.452879581151834 2004 34.39817455790074 2005 31.954887218045116 2006 28.74354561101549 2007 36.22072897576869 2008 35.76168211215948 2009 36.70367800138792 2010 38.98389001028298 2011 63.83200180038258 2012 40.7185628742515 2013 32.827072758037225 2014 17.03358125530995 2015 22.055772168638985 2016 30.036599217533972 2017 51.272280899163746 2018 45.091326722176824 2019 44.09181823863991 2020 25.653855599214147 2021 34.107319648868064