Year	% of total merchandise exports
1963	0.02718129926610492
1964	0.3163786809442687
1965	0.5063848524878908
1966	0.040766408479412965
1967	0.15311004784688995
1968	0.24198427102238357
1969	0.0707700903249837
1970	0.17842274295230165
1971	0.3606106734847701
1972	2.1307837159253946
1973	2.5567404976756904
1974	1.3113919423483642
1975	1.1671401853147354
1976	0.599951024406171
1977	1.2609045421090768
1978	0.7809256612958908
1979	0.6924153075138572
1980	0.16198889415123996
1981	0.7955405815703009
1982	1.1624593299752721
1983	1.2436505830844988
1984	0.9825693392581597
1985	0.8418598788920981
1986	2.1593199126268345
1987	1.902677678675611
1988	2.616893950905864
1989	1.8196862149366375
1990	2.4419054161624163
1991	1.5016736719697956
1992	6.5067634499573295
1993	7.515532491211026
1994	5.297663783971494
1995	4.88328052660259
1996	5.930789825367548
1997	5.151033249905945
1998	4.115118181265104
1999	4.7836461818259135
2000	5.3125458612476875
2001	5.158397268685555
2002	6.412494272385071
2003	6.350530244514342
2004	5.77016540854621
2005	5.425920393802831
2006	5.212776762536066
2007	5.059408687244692
2008	4.9015508180870615
2009	6.1573449001795595
2010	6.856088426315543
2011	7.81893664258986
2012	8.31299405641369
2013	8.731020826581327
2014	8.578779687656462
2015	8.561551817186498
2016	8.631445250127639
2017	9.339315941043619
2018	10.552548424139117
2019	10.990998107731249
2020	11.62108963125538