Year	% of total merchandise exports
1960	3.5418953530918404
1961	3.1545030531083125
1962	3.2563755593164654
1963	2.0394289598912305
1964	2.1419850489443584
1965	1.582437580255135
1966	1.4939943561161781
1967	1.5881559258337046
1968	1.2947953942721642
1969	1.4636069337697493
1970	1.7530873272063925
1971	2.1533904983061603
1972	2.3219393421934194
1973	1.3190267221238912
1974	0.9995388161809554
1975	0.6812416921749909
1976	1.112005830135656
1977	0.9023452367853245
1978	0.8060124276995042
1979	0.8928185796316703
1980	0.7818343463562414
1981	1.074446355104782
1982	0.8952259336229433
1983	1.0141358404315934
1984	0.9856088591453115
1985	0.8296333393384034
1986	1.1176417284726439
1987	1.0125213906119268
1988	0.8352618011975791
1989	0.9971031134803054
1990	1.2889274044425238
1991	1.6717974635607467
1992	1.1603140669417442
1993	1.3938272347894032
1994	1.8268747064847177
1995	1.6185520025765114
1996	1.923786953404923
1997	2.2305461742622117
1998	2.2731631759970403
1999	2.545732857211998
2000	2.2948274035989336
2001	2.055341522873704
2002	2.021956686857579
2003	1.9489982290310959
2004	2.091888439424263
2005	2.928413047430244
2006	2.85862212165254
2007	4.9262113666135265
2008	5.667417202417253
2009	4.995367323389981
2010	4.877357490427479
2011	4.903452036999493
2012	5.542638846710149
2013	5.476979357278255
2014	5.542988798274603
2015	5.607621791172482
2016	5.8167477245175006
2017	7.091954901762293
2018	6.830489262588429
2019	6.67621151756233
2020	5.792655710390548