Year	% of total merchandise exports
1960	7.881814305953743
1961	6.2379888188513215
1962	4.834223010689388
1963	4.7449514321833375
1964	4.253733304347619
1965	4.280720945535966
1966	4.012619901592521
1967	3.8000396931949516
1968	3.879776627318248
1969	3.6152783636553254
1970	3.3680610024242643
1971	3.347669261245968
1972	3.4382901593466313
1973	3.7209391855908893
1974	4.975822317704959
1975	7.0236449445639515
1976	6.444956376090944
1977	6.566254249976186
1978	6.235526390565937
1979	5.518717163189891
1980	6.176573018357787
1981	7.676719060622108
1982	6.9125517793503235
1983	6.4805179942165445
1984	5.63122411475388
1985	4.842917053122591
1986	3.499437613437391
1987	2.80446266602574
1988	2.7030667921302056
1989	2.7426605958249763
1990	2.8643386247758484
1991	2.8935348789011157
1992	2.844669281774213
1993	2.8135909770453558
1994	2.441752175134879
1995	2.1829222985114014
1996	2.159617224661857
1997	2.0961083288129267
1998	2.1190809147935736
1999	2.0222508913681416
2000	1.9118278142964795
2001	2.03204519232712
2002	2.0773612693127315
2003	2.063981383771773
2004	2.154566275756649
2005	2.2438530199809996
2006	1.978474166960679
2007	1.9806987594446366
2008	2.275128212997249
2009	2.66719592443416
2010	2.5639870567903973
2011	2.2202846197193002
2012	2.3774431769668944
2013	2.389432093491952
2014	2.335285617942874
2015	2.266608905378811
2016	2.260204282639094
2017	2.1815905647133205
2018	2.083259593081053
2019	1.935855983227876
2020	1.8112564461863971