Year % of commercial service imports 1975 3.684210526315823 1976 5.263157894736906 1977 4.4642857142853245 1978 5.277777777777914 1979 3.875968992248062 1980 3.2303370786518286 1981 3.9531478770132367 1982 3.567181926278124 1983 2.84360189573421 1984 2.86697247706428 1985 2.0060180541624533 1986 2.081051478641669 1987 1.5772870662463845 1988 1.3752455795676326 1989 1.5429122468659813 1990 1.3597033374536238 1991 2.0594965675057466 1992 1.3541666666668704 1993 -1.1368683772161603E-13 1994 5.684341886080802E-14 1995 0.10509721492370261 1996 0 1997 0.9756097560976968 1998 0.7726781023026206 1999 0.9343412893910141 2000 0.6338139755982013 2001 0.8945318135909588 2002 0.8359174868544841 2003 0.7518796992481498 2004 2.648281899759141 2005 1.8495514147688397 2006 1.5341865289031063 2007 1.274056192583842 2008 8.74723506937481 2009 12.280404591170992 2010 18.432645804310482 2011 11.101332074415922 2012 13.420746470530517 2013 21.827545960690784 2014 21.723212145608002 2015 16.54855769874173 2016 27.138447481746326 2017 28.00276390433308 2018 33.0735947100184 2019 24.52492679405978 2020 29.833468087258012 2021 24.527102519665505 2022 19.777031432468178 2023 17.66066406204878