Year	% of total merchandise exports
1960	18.281479293541484
1961	17.583463524687172
1962	16.418236521358395
1963	15.93238427042073
1964	15.868691390202727
1965	15.55264356230041
1966	15.50556378887733
1967	15.15174716571738
1968	14.60016544842984
1969	13.833640605544664
1970	13.563382640604486
1971	13.825731772730862
1972	12.834442835704635
1973	12.929402478287038
1974	14.894386447264122
1975	17.018161484414478
1976	14.61107096613967
1977	14.49999503055558
1978	14.665057424848419
1979	13.502718071816652
1980	15.106060284638879
1981	16.622725006140733
1982	15.830586400107563
1983	14.862894371246718
1984	14.119573466082208
1985	13.989548268864501
1986	12.38067849997091
1987	11.676418087349335
1988	11.892718313858868
1989	11.733273018234256
1990	11.700211836259307
1991	12.331987814692852
1992	13.606528464470482
1993	15.670223782068692
1994	15.436873863331835
1995	15.602747958693234
1996	16.09657412667668
1997	16.26362057068656
1998	15.211957655865316
1999	14.456655487196224
2000	15.66580739517611
2001	15.982915046331028
2002	16.293558760382982
2003	17.057121420496454
2004	17.79895182243536
2005	18.47881146884755
2006	19.198913144855485
2007	20.104394775904577
2008	21.2718767088247
2009	22.105636440739097
2010	23.752558957148686
2011	24.308262434576886
2012	25.071202008042466
2013	25.314530852751975
2014	25.21134715034361
2015	24.698639011418855
2016	24.365614648941413
2017	25.357456905335297
2018	25.38879314882353
2019	25.2105131170137
2020	24.765119086156766