Year % of commercial service exports 1974 18.534278959810994 1975 32.160566706021214 1976 29.42523574315226 1977 27.110754414125367 1978 30.144546649145898 1979 32.10367691380349 1980 33.60197775030907 1981 23.60663432952583 1982 25.690770135214574 1983 21.648063033486544 1984 21.09042553191485 1985 17.867932671558 1986 20.5227963525836 1987 23.26728176379753 1988 19.849824391425468 1989 19.774401473296475 1990 19.148716891682994 1991 19.155805333014452 1992 17.872005398717803 1993 18.660160886192827 1994 13.51571594877765 1995 15.448541552008793 1996 23.20314391611254 1997 16.77075344216796 1998 13.973902179445652 1999 11.083921583139807 2000 9.729116255166046 2001 8.474468910583774 2002 9.692260884406762 2003 15.740065557058012 2004 16.336605043744125 2005 18.788815512154038 2006 15.919137466307246 2007 12.43047297556481 2008 12.262564494553782 2009 5.283116031928108 2010 4.933799111571157 2011 9.690347505318016 2012 11.670995259321044 2013 12.324683817876709 2014 12.905442763145992 2015 12.104933595820832 2016 12.253390749855193 2017 12.204781977177168 2018 13.303700307141925 2019 15.066671960389671 2020 17.463614049932172 2021 18.07289225426678