Year	% of total merchandise exports
1960	0.7092198581560284
1961	0.49261083743842365
1963	4.635761589403973
1964	0.4464285714285714
1965	0.28957528957528955
1966	0.6842619745845552
1967	0.3050640634533252
1968	0.22412102535369097
1969	2.867783985102421
1970	2.117326057298772
1971	2.4795081967213117
1972	2.7451754880938943
1973	2.01032283516339
1981	0.3886546660055377
1982	0.36820060156288104
1983	0.24006384789416937
1984	0.503218590697704
1985	0.2501019526229005
1986	1.2513368474723345
1987	1.3927469927866134
1988	0.22185848328887073
1989	0.4882272674872565
1990	0.685017398036023
1991	0.8496867052913968
1992	0.9603480069770122
1993	7.0973109593409704
1994	3.609671924238991
1995	6.126539848191784
1996	3.603733675913401
1997	6.11777572232234
1998	3.9849649162831846
1999	2.6472153245831858
2000	3.850611106585712
2001	3.6324532052094884
2002	3.9724198903051624
2003	5.3647692028232195
2004	8.032054346967204
2005	7.512300440265301
2006	5.4792818606662745
2007	5.103908332469978
2008	7.2264001661093324
2009	3.623653254554081
2010	6.691923383577268
2011	7.445522918600199
2012	4.761051479894101
2013	4.790130274335045
2014	4.855007889023627
2015	3.0944020359250946
2016	2.9873513886276957
2017	5.469190708241141
2018	6.00132524594571
2019	4.347524691738062
2020	3.949006532736263