Year	% of total merchandise exports
1960	20.798213302254144
1961	20.111523443787853
1962	18.586918415522685
1963	18.210793810542206
1964	18.002515405074636
1965	17.577520108707205
1966	17.465293656077435
1967	17.10729564599377
1968	16.121671868160192
1969	15.22148206171043
1970	14.868670413355007
1971	14.785471262565775
1972	13.793110845450721
1973	14.044620842368499
1974	16.84493197501044
1975	19.059379109034875
1976	16.665520289663803
1977	16.430654240797164
1978	16.344903385192836
1979	15.116257237529851
1980	16.888727180304464
1981	18.302902426364433
1982	16.7346478957239
1983	15.119403482748567
1984	14.264735407755833
1985	13.959830552063094
1986	12.258157077059497
1987	11.225033940283693
1988	11.226869810888218
1989	11.208680698472989
1990	11.159953101308757
1991	11.801319243748205
1992	12.968128134333234
1993	15.200168621683178
1994	14.98235758589144
1995	15.022812901910983
1996	15.545932736561538
1997	15.792559496426096
1998	14.676080921598711
1999	13.660835569089155
2000	14.469819655577322
2001	14.815378476280758
2002	15.011682299495192
2003	15.541263039471588
2004	16.33416248895064
2005	16.99428525592467
2006	17.695017896292992
2007	18.520473387206636
2008	19.74269566083394
2009	20.893840088880015
2010	22.75786125103326
2011	23.274040858615056
2012	24.195912210444764
2013	24.402300186452734
2014	23.844808375988315
2015	23.18084057969442
2016	22.9143465706843
2017	23.72763090117941
2018	23.51750642986144
2019	23.22160805579239
2020	23.24418251541181