Year	% of total merchandise exports
1960	4.044704630122405
1961	3.681621702191087
1962	4.02493321460374
1963	2.866521522639694
1964	2.5726648601206237
1965	2.7815179816268456
1966	3.2494182311217883
1967	3.178591580909745
1968	3.7922530885468326
1969	4.301195460125811
1970	4.525427465423445
1971	5.685946732066481
1972	5.8108072784481175
1973	5.439197525950455
1974	4.928637861405484
1975	5.1090829861077465
1976	4.657580004614168
1977	4.5172409799374
1978	4.994279922788216
1979	6.420896607012059
1980	7.158504947403402
1981	6.5217520540643905
1982	7.297542051846728
1983	4.892548997074268
1984	4.837625918373816
1985	5.278768459713315
1986	3.735420687991476
1987	4.835936731061007
1988	5.4600157096678235
1989	5.681508436148086
1990	7.430510621730119
1991	7.999690361427003
1992	8.353291569640596
1993	11.528095789757216
1994	11.570440151880755
1995	13.368426143386664
1996	13.522247390775878
1997	15.374416226564659
1998	16.998331950151087
1999	16.67462205279422
2000	16.141770284809123
2001	18.37479709383087
2002	16.268513349374345
2003	15.587503799825967
2004	11.410032218633052
2005	17.266456059419603
2006	14.317867921863645
2007	14.095776071838234
2008	18.20545233073835
2009	13.491783837435491
2010	17.09617611137338
2011	16.198139717062023
2012	14.80194393142534
2013	22.433861515516305
2014	19.082923161952714
2015	19.79178409829034
2016	12.792584932630213
2017	14.330414372575026
2018	10.940509025028405
2019	11.417595384317652
2020	17.240779155337236