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	37.20075900358418
1982	40.914137160596084
1983	38.48823029645382
1984	35.00999576616917
1985	34.397430484347666
1986	29.52378780888207
1987	24.63380089083379
1988	25.84178364369328
1989	19.899418196660847
1990	16.45711557592586
1991	16.553258716530454
1992	14.884406756180974
1993	16.42391606445763
1994	15.004729962277889
1995	14.67812282832594
1996	13.172477926094722
1997	10.890363477846456
1998	11.78988432339362
1999	11.291973758551007
2000	9.543115076057207
2001	10.61300059805169
2002	10.165664197427722
2003	12.126106582798366
2004	12.832761818546748
2005	14.24646549645137
2006	13.711603581884932
2007	14.044224713954515
2008	16.478597863315837
2009	23.99518040688055
2010	24.24554569075279
2011	23.73416529461036
2012	29.038766703834394
2013	28.658073713935384
2014	26.972770842317047
2015	25.245124247261263
2016	24.581827451808078
2017	23.328058063770936
2018	23.43567601386247
2019	24.0295489213805
2020	23.413759503177353