Year % of commercial service exports 1976 47.32604945370903 1977 47.690811861934854 1978 50.68807339449541 1979 49.76047904191617 1980 45.03638253638253 1981 48.83116883116883 1982 46.244700181708055 1983 41.82076813655761 1984 49.029126213592235 1985 55.62913907284768 1986 57.7455919395466 1987 52.85481239804242 1988 47.31437598736177 1989 41.4603441040705 1990 39.714461160577216 1991 35.940551779176324 1992 37.86598773290129 1993 40.905188274254876 1994 42.71494202581492 1995 43.39840470193115 1996 40.19650183545671 1997 40.90416305290546 1999 53.050489027526005 2000 47.95402505661727 2001 47.02354355175682 2002 49.24110763660784 2003 44.336044664148496 2004 38.417342051329754 2005 39.29617720960056 2006 40.21991422389308 2007 35.998658569899085 2008 34.42308147316096 2009 38.684308413324025 2010 33.248882897361895 2011 36.96428656873222 2012 37.84758031129233 2013 43.46429209534466 2014 43.43312750427735 2015 44.837291843073444 2016 44.75587890211124 2017 44.13359878787247 2018 43.26215841814602 2019 45.33933135698279 2020 19.399056520763303 2021 30.026148827539107 2022 36.55477160821006 2023 42.178513721975