Year	% of total merchandise exports
1960	57.836453931336564
1961	60.398411206452195
1962	63.77020545096626
1963	62.953117448042526
1964	63.33268595843853
1965	64.71507991660876
1966	66.40063846767758
1967	65.35651665692578
1968	66.21361889071939
1969	67.20237299262088
1970	66.90270514830442
1971	70.6100297953024
1972	76.88062126382724
1973	77.71408625081129
1974	77.80645104564618
1975	77.72584705542486
1976	78.85750898957707
1977	78.86998353722853
1978	80.34213834397434
1979	81.41192231178778
1980	79.38910386657867
1981	77.32195790677477
1982	80.55849751038735
1983	81.03542210484628
1984	82.16184004382889
1985	83.11612092671827
1986	87.21379079849243
1987	89.45313371561168
1988	88.83942699018979
1989	88.84050363220159
1990	89.375607634283
1991	87.18555154788996
1992	86.51417685455819
1993	88.30504907232745
1994	88.0746811696771
1995	89.63945067198773
1996	87.85183618358575
1997	87.07556183697291
1998	87.80776899161566
1999	93.92143788810479
2000	93.03423967966313
2001	92.33086874295068
2002	92.1081211801552
2003	92.06448315964167
2004	90.83708253797911
2005	90.51534579459074
2006	89.39816970127407
2007	87.22279850110888
2008	83.79370223749531
2009	81.95852570475358
2010	82.35663213761048
2011	81.1591604241197
2012	78.5930185723664
2013	78.14224245863642
2014	79.01866148144899
2015	82.13273153628379
2016	84.50305075001715
2017	83.62625438376045
2018	84.96859573084888
2019	85.94028110265735
2020	87.25382943028274