Year	% of total merchandise exports
1960	1.3825129740234317
1961	1.2885030068327066
1962	1.584134739125707
1963	1.573285688010997
1964	1.4359667966758136
1965	1.6455890812563427
1966	1.5867935101621204
1967	1.706835250712007
1968	1.9024227990273053
1969	2.095210930911297
1970	2.053413587483748
1971	1.941279440648628
1972	2.0425642052999256
1973	1.5572014529055247
1974	1.9209506872615387
1975	1.7326392346561625
1976	1.8840211378415503
1977	1.400544212710024
1978	1.571930715560098
1979	1.4227532686147466
1980	1.9439113652455284
1981	2.076400759147949
1982	1.3451477591384087
1983	1.59838476321492
1984	1.2179131642703254
1985	1.8015495860196982
1986	1.4257596901113085
1987	1.6036503730593146
1988	1.4508827926179908
1989	1.2226871713697298
1990	1.5649503045327067
1991	1.7575603542555434
1992	1.5774450264291453
1993	1.4899659455923409
1994	1.6485072972699255
1995	1.5660120509892654
1996	1.614965559382453
1997	2.0869732798095577
1998	2.275279815977127
1999	2.318397848277727
2000	2.292898421211211
2001	2.324758315076659
2002	2.4876782461240268
2003	2.311931862537892
2004	2.7056422483957236
2005	2.8211859958213332
2006	2.842602178963187
2007	2.7119909789604217
2008	3.114009012541621
2009	2.7465128601783206
2010	3.075265978695592
2011	3.1526180718431953
2012	3.554328455877862
2013	3.669719947412616
2014	3.987553998330867
2015	3.404441116504966
2016	3.0169236525420784
2017	2.9758385826738576
2018	2.8852067764377014
2019	2.895430700018745
2020	2.9025979104317323