Year % of commercial service imports 1975 28.245481246212794 1976 25.31074890478127 1977 27.132576545788528 1978 27.76241399284057 1979 28.208346682122464 1980 28.35479176301538 1981 26.684834825635097 1982 26.113111907678302 1983 26.51536917620864 1984 27.211597775553354 1985 27.83882176150804 1986 30.875968919829813 1987 32.71446281945888 1988 33.32000622949483 1989 33.011782209234816 1990 32.705546391388815 1991 32.30377921279329 1992 33.17393797829125 1993 31.94273276111943 1994 33.13372109772368 1995 33.24926182230384 1996 33.75013960952719 1997 32.93597635149235 1998 32.3490874000121 1999 32.0730749895737 2000 31.119144712318437 2001 30.403324817863957 2002 30.186696843789438 2003 30.087927768321002 2004 28.63392042323709 2005 27.92094390340976 2006 26.742114432100283 2007 25.932954112812677 2008 25.22332466108116 2009 25.720995870406476 2010 24.776460784596544 2011 24.449943468571146 2012 23.976098581021013 2013 23.84558086202973 2014 23.676692592918602 2015 22.492614616561006 2016 22.349581788838503 2017 22.790341154586567 2018 22.484725731774947 2019 22.2158323819993 2020 11.207899790233862 2021 12.041515943745372 2022 18.054053301142844 2023 20.33557576005355