Year	% of total merchandise exports
1960	3.9813688891916574
1961	3.724943355256776
1962	3.3268045272180204
1963	3.201645134886597
1964	3.063562498608239
1965	3.017864903350305
1966	2.921247186915173
1967	2.6974821139741545
1968	2.716014667598679
1969	2.7276274406417476
1970	2.5227122986930084
1971	2.6412616805621547
1972	2.6756156352047413
1973	2.8098890312777707
1974	3.7531549138726596
1975	5.206711307221632
1976	5.409566849595611
1977	5.90240351748193
1978	5.808751693244134
1979	5.798445685509471
1980	6.043781210946159
1981	7.306839268834396
1982	7.816850070904638
1983	7.071715891257563
1984	6.040045441670733
1985	5.258118092495215
1986	4.399528017946372
1987	3.8383149984766542
1988	3.669401300524708
1989	3.486156889407762
1990	3.282888461431198
1991	3.3135605979412874
1992	3.376000773979869
1993	3.4091809433311306
1994	3.0142536280774785
1995	2.8251980880084657
1996	2.851350804705744
1997	2.869661148049717
1998	3.017206235813963
1999	2.735180715814224
2000	2.7195475377326965
2001	3.0009341567771917
2002	3.135324675495802
2003	3.1012178688096053
2004	3.210601398696674
2005	3.3871767254194163
2006	3.455243220812326
2007	3.7655510278781876
2008	4.40148920804535
2009	4.573740927520145
2010	4.3577821335847355
2011	4.100154207708257
2012	4.655436193767207
2013	4.807845776332351
2014	4.898357179182132
2015	4.96360716399953
2016	4.719905534121085
2017	4.382517618580124
2018	4.077959005785496
2019	4.261547651169939
2020	4.040317738136679