Year	% of total merchandise exports
1960	6.534613028384725
1961	7.628784899724734
1962	8.74224478285392
1963	9.121122599704579
1964	8.608
1965	7.589415527769701
1966	5.894378194207837
1967	8.246847083552286
1968	8.880739795918368
1969	10.108514733641428
1970	10.874607722745258
1971	14.23717189350957
1972	12.895118301692696
1973	11.759829657201372
1974	16.078834826111514
1975	21.757377601955717
1976	24.17887920541409
1977	24.552037879491227
1978	21.760737795737473
1979	21.934794448416582
1980	21.61787299419597
1981	19.124493927125506
1982	17.537534305548082
1983	10.885050538663117
1984	13.461538461538462
1985	13.002746336079671
1986	15.140204578205097
1987	14.614957600352213
1988	10.719797561280814
1989	11.12293129918642
1990	11.279486499879
1991	12.9777807168364
1992	15.396312295419524
1993	17.991759093746165
1994	19.565395396033654
1995	17.457765420532503
1996	16.891492335688355
1997	18.177223470067
1998	20.318852301994426
1999	18.691765740443394
2000	19.38357793662582
2001	19.852015053957
2002	17.828177040322448
2003	20.205789108798637
2004	17.46392615179497
2005	16.972185162954208
2006	16.656132595314613
2007	16.192421193561866
2008	19.798031308817386
2009	16.826582657482152
2010	16.96015721115894
2011	16.735105873824143
2012	16.132971706126042
2013	16.63938661581448
2014	16.635151210870838
2015	16.94991026497145
2016	16.520940568404104
2017	15.973105625363052
2018	14.336878399253674
2019	14.488564074280633
2020	12.202328353989314