Year	% of total merchandise exports
1960	19.777797077125424
1961	20.661037394451146
1962	18.93524143944637
1963	18.67632287858145
1964	19.47954629203682
1965	20.41498389135161
1966	20.077373045281877
1967	20.667108986324852
1968	20.247048439628934
1969	19.735949390970013
1970	18.44786359064955
1971	18.708827206831952
1972	17.02491230556194
1973	17.191858367620803
1974	20.761641230640965
1975	22.57349429428993
1976	17.830312433065703
1977	18.496951485180457
1978	18.461122983605087
1979	17.603822455687627
1980	19.698163373916323
1981	20.328084780109144
1982	19.016673231169158
1983	18.342188761403527
1984	17.43548191978393
1985	18.067391090198583
1986	15.906268664575077
1987	15.350484647818863
1988	15.736771181990077
1989	15.603795404282003
1990	16.19974276909792
1991	17.45570760856045
1992	19.11977657002188
1993	21.351151777899045
1994	21.532501425346435
1995	22.248241535241455
1996	23.002057986842154
1997	22.59693660893716
1998	21.05420827236438
1999	20.497709150775687
2000	21.146494965551124
2001	21.995859969482705
2002	22.845766827671703
2003	24.578129136607767
2004	25.34932893011787
2005	25.91015051323203
2006	26.50495304750949
2007	27.908954434059435
2008	29.10755259291645
2009	29.624872369612334
2010	31.056390233922755
2011	31.4704061164202
2012	31.247535923050883
2013	31.356093073302947
2014	31.123926492732334
2015	30.69775721713291
2016	30.395128853646852
2017	31.798976861290264
2018	31.707531412366357
2019	31.33243743241009
2020	29.73602341472967