Year	% of total merchandise exports
1960	10.153124568906057
1961	9.129272752848502
1962	8.529772448562474
1963	8.410326086956522
1964	6.863669705543331
1965	6.410935678711454
1966	7.196365954733822
1967	9.295937545178546
1968	7.577875147943895
1969	7.617560481531109
1970	9.07379281778358
1971	6.827424036697873
1972	6.6368842587966785
1973	6.502525130133866
1974	7.698922233051519
1975	7.935920330565585
1976	8.330706910719586
1977	8.422023896305182
1978	8.660714353785737
1979	8.24484168724133
1980	8.149790048912159
1981	9.544720262245535
1982	7.4811107955183225
1983	7.073682609687476
1984	7.135205456128775
1985	7.84611416603906
1986	6.233043588301359
1987	7.283713429626595
1988	7.2355887789596345
1989	7.821276528807126
1990	7.711349281165369
1991	7.802496043306009
1992	5.563674467132251
1993	4.657602756318213
1994	5.445565151032465
1995	4.037543259820876
1996	4.944183673108336
1997	2.1805094878210736
1998	2.090747721679763
1999	2.2220329108551806
2000	3.4228460949051125
2001	3.1784927126026785
2002	3.088689445998613
2003	3.2015003847335577
2004	3.2365759988170284
2005	3.6776260493596338
2006	4.20509508530411
2007	4.09257226359471
2008	4.7170476850852
2009	4.104913370937676
2010	4.26382504914913
2011	4.631209244945037
2012	5.00650658045695
2013	4.881190608976477
2014	4.2376243189444525
2015	3.2653187729609274
2016	2.7196330963063096
2017	2.9266937411393577
2018	3.4010443429636084
2019	3.0254137666233554
2020	2.1582605107242316