Year	% of total merchandise exports
1960	1.5151515151515151
1961	0.9389671361502347
1962	3.592814371257485
1963	2.2222222222222223
1964	3.7735849056603774
1965	5.904059040590406
1966	4.621848739495799
1967	3.717472118959108
1968	0.32786885245901637
1969	0.39045817826856205
1970	0.9092133620689655
1971	7.225955632632415
1972	7.887229400906193
1973	7.745070743374926
1974	0.780500799147576
1975	0.11723329425556857
1981	0.8930849707637847
1982	1.4709073812177402
1984	0.04294889921291586
1985	0.00199063405500664
1986	0.21960470293170536
1987	1.963262831941237
1988	3.185265052901947
1989	11.962276092236142
1990	5.400965609404649
1991	22.070413342851356
1992	8.392277037429775
1993	9.141350564597376
1994	3.34174214585048
1995	4.947537070923384
1996	7.966035082318887
1997	27.70852846040538
1998	10.444214423535088
1999	13.136874908284199
2000	12.575700807748225
2001	9.432666888801645
2002	11.75979624619298
2003	14.158736617337691
2004	16.766666251910113
2005	9.606846711359749
2006	12.013103667621792
2007	4.655788244385687
2008	1.500790035799183
2009	3.499380310825997
2010	17.4090857010747
2011	7.367166283181898
2012	9.103198543923439
2013	9.212109606905521
2014	5.414695605151535
2015	22.640866950875825
2016	21.033111865021816
2017	32.55223263698085
2018	37.9100125768111
2019	58.859754762282826
2020	44.373428322421596