Year	% of total merchandise exports
1960	91.99509904022871
1961	90.71962249311837
1962	89.15209625869525
1963	88.51550960118169
1964	87.32799999999999
1965	88.52864204710671
1966	89.7671777399205
1967	86.13154668067963
1968	88.73086734693878
1969	87.05912983643752
1970	85.36675415151733
1971	81.27480931895172
1972	81.38384924717104
1973	84.9365278026104
1974	75.46760267893166
1975	68.37491043311236
1976	63.06587467744291
1977	63.49921084393279
1978	63.93021247474419
1979	63.95910392054122
1980	66.58202458176852
1981	68.60576923076923
1982	71.67572512511435
1983	76.97683124662036
1984	74.14226398601399
1985	72.96527296527296
1986	72.77645224539935
1987	73.7600735054842
1988	77.76232915757129
1989	78.29813469372952
1990	78.27995897530452
1991	76.8152360798836
1992	72.96225640306872
1993	71.4880126218305
1994	70.36738771415222
1995	70.68753966574994
1996	64.62818345118197
1997	65.13947294914591
1998	62.64927767152071
1999	68.43779386899355
2000	65.84569651433182
2001	64.13426542974003
2002	64.16864004025136
2003	65.17008828433679
2004	65.43277129715177
2005	64.3147949369942
2006	65.88215446427864
2007	59.153265290061896
2008	58.53097164056159
2009	51.98643575765705
2010	51.50133411058363
2011	52.9798940748636
2012	52.23057270018363
2013	50.162320113168015
2014	50.21111433810545
2015	48.52808900016666
2016	48.34855774004641
2017	48.77474401741896
2018	45.927483717604495
2019	46.59161051725716
2020	43.42714458101146