Year	% of total merchandise exports
1960	7.627663255721984
1961	5.973914902715416
1962	6.3541263076327
1963	7.007172980571676
1964	9.515332683975414
1965	7.911187019641332
1966	5.363622022401009
1967	4.230835289402874
1968	4.285714285714286
1969	3.944270480503658
1970	4.636128632857597
1971	4.372212745450512
1972	4.487259205352715
1973	5.263234793789149
1974	5.631071637205478
1975	6.110531120840763
1976	6.442167355643469
1977	5.570977521653488
1978	4.795526669530633
1979	5.794320695470483
1980	7.861722193003137
1981	6.252363302027364
1982	8.141716537051195
1983	7.8933017190278605
1984	6.761737424233165
1985	6.736466009393703
1986	6.61489434251233
1987	4.855109418396272
1988	4.875775345397432
1989	6.815911704002876
1990	4.507419779315713
1991	4.181863100247377
1992	3.9560153274989367
1993	3.4190690300533206
1994	3.5813357335999827
1995	3.1410706404862534
1996	3.4458247321539583
1997	3.1757349507438186
1998	3.4815957859854416
1999	4.293705398981056
2000	3.7506801962231453
2001	3.4595003404550964
2002	3.0409074585428417
2003	2.5161397342896206
2004	1.9702001409289678
2005	1.5691135305427064
2006	1.5087486926763614
2007	1.4228590021768632
2008	1.376741327385474
2009	1.0516307546113692
2010	0.9433695135952375
2011	0.940490452417175
2012	0.8722473771077446
2013	2.08843732119123
2014	2.9789791077275978
2015	3.1159541911624253
2016	3.7483081908336686
2017	2.5738475893079102
2018	2.0192306892246323
2019	1.840031213175138
2020	2.2819459965941977