Year	% of total merchandise exports
1960	43.73522458628842
1961	46.30541871921182
1963	52.81456953642384
1964	52.529761904761905
1965	56.75675675675676
1966	46.82306940371456
1967	53.70870739998257
1968	50.80543493486482
1969	51.44009931719429
1970	46.54297407912688
1971	43.84426229508197
1972	49.500620697438215
1973	63.20764021303176
1981	72.73482213550882
1982	75.94029859334226
1983	76.7743263275615
1984	79.39552281981345
1985	72.8512369988955
1986	73.99429935633682
1987	79.95296805454998
1988	83.8981163068744
1989	87.09781183132773
1990	78.54531043800709
1991	75.29837379826155
1992	68.46191066314265
1993	65.64191853228587
1994	71.232480812843
1995	69.11410766202135
1996	69.71027220184361
1997	67.96788241545377
1998	70.67963920250622
1999	70.16524772377912
2000	66.685224731949
2001	62.97358306395048
2002	60.263425569836514
2003	60.980563071274396
2004	46.441580602472534
2005	46.417709023361006
2006	58.12772947075392
2007	55.11219530218451
2008	50.35241747909627
2009	59.87926913534318
2010	48.492129815348534
2011	43.986059425678626
2012	43.36112022825115
2013	37.63124761154897
2014	42.372023802084406
2015	45.76307477748849
2016	40.42965268571888
2017	41.31447764282541
2018	49.285506563365054
2019	62.23445077659922
2020	71.04863536305565