Year % of commercial service imports 1976 -4.263256414560601E-14 1977 1.4210854715202004E-14 1978 -2.5579538487363607E-13 1979 -8.526512829121202E-14 1980 20.314328707573992 1981 17.35381721272931 1982 27.389215162840287 1983 32.97964219617515 1984 33.69449550159622 1985 31.600507168633527 1986 8.87232721142739 1987 9.430127631899666 1988 17.427960236567287 1989 20.54938142168166 1990 17.891830127594645 1991 14.437771593183996 1992 12.130345520464772 1993 18.211949411251723 1994 27.888926566444184 1995 36.32731391178528 1996 30.692158601885566 1997 28.322553385120685 1998 33.049105910498795 1999 31.834993655679085 2000 38.52759469945607 2001 37.02464725515806 2002 37.05225397895068 2003 35.87853045973404 2004 39.15288814399322 2005 39.817328988241485 2006 38.15718679403624 2007 52.26318073104729 2008 41.613489643133605 2009 42.92266049340512 2010 45.48618326334765 2011 43.33977953818443 2012 46.333838036049855 2013 46.52084282153417 2014 48.588422014018235 2015 52.67103752968392 2016 50.043325464412355 2017 51.358515237671945 2018 53.609563054795345 2019 56.40639125694138 2020 50.435122396711236 2021 52.55760940403654 2022 52.2273565041537 2023 52.035296929128776