Year % of merchandise exports 1962 34.37642409853912 1963 30.64904114717591 1964 27.161016421709743 1965 26.161263584027328 1966 26.465884061231847 1967 25.280003678035968 1968 26.1793187223558 1969 33.448930949927295 1970 28.337351392067628 1971 20.986758577009006 1972 17.51631241912608 1973 23.108874310211412 1974 17.077839970233455 1975 12.484716556465127 1976 15.238667000395179 1977 14.105912891827128 1978 13.73836379273058 1979 13.182065822296693 1980 10.279931605658092 1981 7.374270702052622 1982 5.582108784557755 1983 6.1833307535754924 1984 5.699547496750696 1985 4.425608489013605 1986 4.345478061080331 1987 4.358879435578417 1989 3.6472554335313054 1990 2.5564808904007554 1991 2.022779167004507 1992 1.77829027722373 1993 1.3500293618399266 1994 1.1236128110188417 1995 1.0809304781433473 1996 0.8403991606156531 1997 0.6829639331000297 1998 0.6785125424087227 1999 0.5618536348354846 2000 0.45812663636118606 2001 0.4319527476331911 2002 0.40258813195483817 2003 0.35151043388490977 2004 0.34578083177970115 2005 0.3220836789522221 2006 0.3145883595724776 2007 0.28488568874303444 2008 0.2831826897556619 2009 0.22943115336757272 2010 0.2864886661879808 2011 0.3113587596726186 2012 0.25337048325289063 2013 0.29483137620986155 2014 0.3218456220146032 2015 0.4258755874020584 2016 0.5417619648691708 2017 0.5667034462009124 2018 0.5810577112811645 2019 0.5047205713554958 2020 0.43430597493682394 2021 0.35611004245261807 2022 0.3730959751031052