Year	% of total merchandise exports
1960	69.02966926070039
1961	70.52291196868485
1962	69.94754996928602
1963	69.81139122315592
1964	73.7289524835484
1965	74.15194841603588
1966	76.23564397046759
1967	77.97725121585005
1968	77.02796827560051
1969	77.541394518147
1970	76.06313523546814
1971	76.73626981730777
1972	78.24061508589787
1973	80.38725061921272
1974	80.798002044177
1975	80.21701083723732
1976	82.57740732585836
1977	82.9008550448837
1978	84.53972283101554
1979	85.29617501523444
1980	84.9320213039302
1981	81.49053125025578
1982	76.3294286104767
1983	73.81300709032092
1984	72.54415272635615
1985	73.04005593637253
1986	74.46313705041658
1987	74.6864679237096
1988	72.43797901907061
1989	73.23758101560097
1990	74.44073538081531
1991	77.80595809838515
1992	77.5022677813646
1993	77.44375638793854
1994	75.56524284469565
1995	67.86109859406892
1996	71.75965536544436
1997	72.23699510709872
1998	71.01677725580466
1999	72.41524079722737
2000	64.9074447661742
2001	65.47596410454642
2002	65.28314839063464
2003	63.8421535637424
2004	62.4358191604958
2005	61.866632073805114
2006	62.56028188291728
2007	62.0001144688853
2008	60.91117968431696
2009	59.26706470797066
2010	60.000817664105774
2011	59.104379745971336
2012	59.355734941180124
2013	58.25531649710805
2014	57.57767413825894
2015	57.84137298514612
2016	57.972935019752
2017	55.984915547291706
2018	53.13394306477042
2019	51.06977169895901
2020	47.569243720343586