Year	% of total merchandise exports
1960	5.204221466835145
1961	5.164528946925099
1962	5.1969355633831915
1963	5.335011932193067
1964	5.419783259433821
1965	6.217782471961427
1966	6.548152353759044
1967	7.474929119641445
1968	7.465292410687409
1969	7.114374223927659
1970	6.3448556564886
1971	7.54709425068705
1972	7.174482356985246
1973	7.26497198877631
1974	9.661893920311154
1975	11.922099239406684
1976	10.203947825543102
1977	9.969492990297827
1978	9.696169883654834
1979	10.160173740783607
1980	11.730547237246446
1981	13.762349446857748
1982	13.734914166878983
1983	13.1568303619312
1984	12.858068520504325
1985	12.300217086223727
1986	11.429623284745283
1987	11.115000724949054
1988	10.74432139270174
1989	9.57975632078902
1990	8.94281136919452
1991	7.877992365039513
1992	10.430365374061216
1993	10.817880866681888
1994	9.482453230875006
1995	9.519565277828214
1996	10.238397104039132
1997	10.389526169156452
1998	9.946196066032915
1999	9.810862041451383
2000	9.469745578045124
2001	9.921540825090082
2002	10.263159611503609
2003	11.092823444363558
2004	11.900176299651607
2005	12.56101281363606
2006	13.699995267995124
2007	15.23604850351071
2008	16.533562286559743
2009	16.997057301864753
2010	18.43912979365839
2011	18.811907679997724
2012	19.192043795106457
2013	19.408915024519125
2014	19.71976731259141
2015	18.91110654480146
2016	19.136081805009095
2017	20.008649680003163
2018	20.054861060464134
2019	20.10967448195745
2020	19.50173205056988