Year % of commercial service imports 1970 44.48123620309051 1971 44.3 1972 44.42508710801394 1973 47.75900073475386 1974 51.43769968051119 1975 48.53836784409257 1976 50.159744408945684 1977 52.42053789731052 1978 51.655913978494624 1979 52.69865067466267 1980 53.23641398407754 1981 52.998126171143035 1982 44.41152706706168 1983 46.07224046476383 1984 38.887838093436734 1985 38.63238894718433 1986 37.71223619598849 1987 35.80792498080058 1988 35.5601675037762 1989 35.87197757271347 1990 36.38023739474485 1991 35.28591352859135 1992 33.46557916935492 1993 33.051897189281746 1994 32.764474032856384 1995 32.65029753844011 1996 31.379882132525537 1997 31.32731483918513 1998 30.604052695879297 1999 27.334534955706154 2000 28.353834303071995 2001 27.36653186013661 2002 25.872150042498344 2003 26.70654022551296 2004 27.223439232110902 2005 27.670243847623325 2006 25.575429300850683 2007 24.103033560654417 2008 23.69681190494423 2009 20.151509914087658 2010 21.853197854087863 2011 22.25998838124508 2012 22.48398415393322 2013 21.443476878711156 2014 21.379075461230503 2015 20.88158245224727 2016 18.79443516610488 2017 19.344078375898885 2018 20.36071545770636 2019 19.81570867497137 2020 16.514581810032393 2021 19.98397192840545 2022 23.4795327299077 2023 20.638024116452872