Year	% of total merchandise exports
1967	4.4152106885919835
1968	3.724040569157038
1969	3.6008929438027764
1970	3.8424762888924526
1971	3.9845090984612948
1972	3.6866144668158087
1973	3.871980866777051
1974	4.9633312469737945
1975	4.71398708964937
1976	3.7610682136200633
1977	5.46839687379295
1978	6.263329066233572
1979	4.846520092949187
1980	5.121393625204753
1981	6.283285060263477
1982	5.8529702904520216
1983	6.664217419527012
1984	7.6792891769878535
1985	5.722237980658449
1986	6.579339962378013
1987	6.263595874159293
1988	6.792616380346404
1989	4.8799858564352885
1990	5.470795024109871
1991	4.6651020609939415
1992	4.756024005892093
1993	4.703043438851548
1994	5.528652173773924
1995	5.68326070015418
1996	5.65465165792537
1997	5.859832842626655
1998	7.535308353308078
1999	6.295740284928912
2000	5.540378864328189
2001	5.718178086418698
2002	6.068860849851308
2003	7.287503875429889
2004	7.405830415536989
2005	7.81426896497911
2006	8.343606769912606
2007	9.296969096140423
2008	10.992957619226624
2009	10.598263157995094
2010	11.251285259725883
2011	12.379224102781999
2012	11.60717725209206
2013	10.90896983782269
2014	10.919267790257376
2015	11.036091385690995
2016	11.763387022078621
2017	11.206642880686017
2018	10.605860413558911
2019	10.82587031087256
2020	9.624293147089874