Year % of commercial service exports 1977 41.21987438787835 1978 45.3997531198 1979 48.93369030436785 1980 48.25842118527819 1981 41.989680405809814 1982 42.94842662311771 1983 44.01242272549574 1984 43.663573164428385 1985 45.829406502896866 1986 33.94095771977688 1987 29.771757913592577 1988 34.59858720115832 1989 26.914643107854356 1990 26.99706533606664 1991 28.76833877051052 1992 22.184658323325163 1993 25.600179893378066 1994 26.467435666824922 1995 27.297768827888778 1996 26.6820147280847 1997 28.730230434007872 1998 25.99286684317177 1999 25.49305127029769 2000 26.326450629739682 2001 25.415875766226986 2002 23.596307807179205 2003 22.450139595749363 2004 24.424338236168428 2005 38.406593357882805 2006 36.46215447912609 2007 33.88984779336323 2008 32.07753291109226 2009 31.371176804929508 2010 35.21679752552989 2011 33.655558982322525 2012 33.798661098767084 2013 32.47017056902047 2014 30.518887944418978 2015 32.84110537861614 2016 30.109466076240512 2017 24.057247801598976 2018 23.194406153896047 2019 25.45859254686843 2020 31.566858662762517 2021 32.77255003299677 2022 28.112379719312674