Year	% of total merchandise exports
1960	9.592476489028213
1961	11.325648414985592
1962	6.720924127067472
1963	6.79532481652623
1964	7.544414699440254
1965	6.979304271246146
1966	5.523848348960456
1967	5.435406698564593
1968	7.5821738253680175
1969	7.551913585994971
1970	9.837040561436899
1971	10.969067289360506
1972	12.07406743185079
1973	16.0316592227995
1974	16.223008433640565
1975	17.365761032508605
1976	11.798016488449923
1977	13.455734262941387
1978	15.34451188868641
1979	17.48747100178859
1980	19.54402871870903
1981	32.0648604740311
1982	35.74212693208519
1983	33.62511220405002
1984	30.545558881233315
1985	30.37539059802735
1986	25.30201742704388
1987	22.340759051129453
1988	23.742748797873723
1989	19.179338284557566
1990	16.923418633131483
1991	16.811881152324652
1992	13.935638366989844
1993	14.851341545700315
1994	9.811658019657935
1995	10.4002716354827
1996	11.174484809813254
1997	10.809401364910528
1998	10.44588951683378
1999	11.823383333747275
2000	10.997909856412004
2001	11.750895457721192
2002	12.87052803293329
2003	13.135154000014419
2004	13.04291794615973
2005	12.20779926114123
2006	11.74798523500478
2007	12.20099225427553
2008	12.278714545155339
2009	15.691562609794799
2010	15.50235836090384
2011	15.448921676957077
2012	17.630565006358218
2013	17.36350702221952
2014	18.032153916041498
2015	19.33044370190795
2016	20.714920171496015
2017	20.44784658978681
2018	20.915985641696206
2019	21.307016125530325
2020	22.465385275479036