Year	% of total merchandise exports
1960	0.08529997156667614
1961	0.9657594381035997
1962	1.5072463768115942
1963	2.5229960578186597
1964	2.5819958129797627
1965	1.8898740083994399
1966	1.7024253731343284
1967	1.2747875354107647
1968	1.588021778584392
1969	1.9362755293041056
1970	0.8834656799567622
1971	1.2790156436565276
1972	1.7089331307466988
1973	1.465876673249945
1974	4.732037362521088
1975	2.4860443982863822
1976	4.467054186723341
1977	4.178892970741588
1978	3.3987895270090123
1979	3.4949786872594877
1980	3.5793448472322145
1981	2.366667104290022
1982	1.9650422704145791
1983	1.7030763676810643
1984	1.6868025454210087
1985	1.2318446816544941
1986	2.0363335341390147
1987	5.1257588309589455
1988	2.159350448844516
1989	1.6046748359785565
1990	1.2196167392382837
1991	1.084989269164215
1992	1.3506655490661914
1993	1.9558151989587478
1994	1.602955989972081
1995	1.8238692405367822
1996	2.0107217358801663
1997	2.3363445862677183
1998	2.682603518408316
1999	1.8100304657394868
2000	1.750413060783181
2001	1.8945851899617148
2002	2.7956611996190945
2003	2.817388816460937
2004	3.4633668696243585
2005	3.3608004413297685
2006	3.3340385321343855
2007	4.543015081281303
2008	6.537856534000923
2009	2.8048886177116903
2010	4.65017090279625
2011	6.282894611039853
2012	6.521661621564753
2013	6.786654009135333
2014	5.4395675087380395
2015	4.666090397393882
2016	3.648846488031249
2017	4.814181552021711
2018	6.907645530485852
2019	5.381113577636939
2020	4.976640032173356