Year	% of total merchandise exports
1960	88.07069219440353
1961	90.5511811023622
1962	96.3157894736842
1963	96.17612977983777
1964	95.87357330992099
1965	96.51250947687642
1966	95.2127659574468
1967	91.9836161497952
1968	92.59934250235867
1969	91.09545842142175
1970	87.01570588905143
1971	86.84918469939177
1972	72.65858701847668
1973	69.45575168383428
1974	65.98485972506242
1975	60.62107462601707
1976	64.4775274653083
1977	70.483601078525
1978	69.96498061069009
1979	67.76849636129083
1980	60.43557388615848
1981	51.87063446848826
1982	47.21958830809228
1983	39.926021964612566
1984	41.990208648430084
1985	36.15408063880566
1986	36.166099259768245
1987	41.34115371722714
1988	48.568310562702656
1989	50.27401152775287
1990	51.35199401012191
1991	42.93516705158558
1992	43.71760940440125
1993	58.102745006110254
1994	54.82667369728041
1995	62.65075724235162
1996	58.50178910974832
1997	60.54421822183791
1998	60.50030342462238
1999	67.03981055334022
2000	60.21937333196696
2001	42.60151065658915
2002	40.76638122727739
2003	36.448492105431356
2004	34.801076824247666
2005	33.82784403506747
2006	34.8249484779395
2007	37.88727476411762
2008	33.46263009116047
2009	40.403980009467396
2010	38.3946563630051
2011	38.1077333296623
2012	34.23402683662019
2013	29.61747247868679
2014	34.793773082736756
2015	34.286762083591746
2016	44.52730786696214
2017	42.17386652484792
2018	38.210628566474455
2019	41.20414396970971
2020	36.30489692086837