Year	% of total merchandise exports
1960	6.775038923111142
1961	7.144511026108863
1962	6.99788926773827
1963	7.008621484168819
1964	6.736678894829804
1965	6.760141330113154
1966	6.883696113170893
1967	6.8503366275909165
1968	7.308298901213488
1969	7.081151757726632
1970	7.277013508693023
1971	8.327145761513304
1972	8.40655387873546
1973	9.086718246292715
1974	9.179631961652516
1975	8.761451410095205
1976	7.760637455805518
1977	8.038620324187294
1978	9.71943193626602
1979	7.568561094336869
1980	8.198271867418978
1981	6.799233349305222
1982	6.200395853338298
1983	6.249829479664699
1984	6.4484584566777485
1985	6.068352429869616
1986	7.573212767746214
1987	6.965064170959972
1988	7.7288879543616105
1989	7.686829019407322
1990	7.521623830471865
1991	7.280426731378142
1992	7.20224918380836
1993	10.257567908754668
1994	9.098177255372738
1995	9.125390950681103
1996	8.917466441081485
1997	9.191776473675917
1998	9.558083786000532
1999	0.5079299519310904
2000	1.3225899677046398
2001	1.4074033669379238
2002	0.8470290967841206
2003	0.6436601336062219
2004	0.5159797347939716
2005	3.7390785333305985
2006	3.774588193649997
2007	4.178583661452501
2008	3.8034896701126404
2009	4.2496513483117635
2010	4.027632092559931
2011	4.1008648306727205
2012	4.797665918999954
2013	4.435058317746625
2014	3.276021757994759
2015	1.8186722937600361
2016	1.899884645031914
2017	2.3457286554614227
2018	2.2950616860017057
2019	2.5339782553737527
2020	3.0720419091072335