Year % of commercial service imports 1970 2.207505518763797 1971 2.5 1972 2.264808362369338 1973 1.763409257898604 1974 1.4057507987220448 1975 2.0706455542021924 1976 2.8221512247071354 1977 3.0806845965770173 1978 3.4408602150537635 1979 3.2983508245877062 1980 2.97680858428522 1981 3.9467426921742876 1982 4.175529058749299 1983 4.348064917800471 1984 4.044765507792562 1985 5.149656813677859 1986 6.560179757043328 1987 7.398453079408597 1988 5.554837969391609 1989 3.9384762571262946 1990 4.708728861071791 1991 5.3895745365950525 1992 5.284989749221244 1993 5.525119403294029 1994 5.869892730837255 1995 6.116829047503714 1996 6.335257261535592 1997 6.497863702538481 1998 7.224196507512723 1999 11.363145472095107 2000 12.566035945766918 2001 14.703408545801596 2002 16.104065165983354 2003 16.56382670428484 2004 16.700300205182913 2005 16.37439136169616 2006 18.898782016627788 2007 20.627640780876998 2008 20.338681838064257 2009 21.440567443582886 2010 20.537038104803287 2011 18.98109860187681 2012 18.04830663422614 2013 17.13979633491983 2014 16.929049489949552 2015 16.29863270792794 2016 16.538732600036607 2017 16.157178681525597 2018 14.976163644466506 2019 15.755504109394534 2020 22.007330357678622 2021 19.574212115505336 2022 16.300442091009515 2023 15.89426386291942