Year	% of total merchandise exports
1960	2.836982438304104
1961	3.5691570952897598
1962	4.933016577669165
1963	5.324564561645253
1964	5.670696649184475
1965	5.836446150887184
1966	5.540790472263554
1967	6.031606639937481
1968	7.4071923124143835
1969	8.65542193703259
1970	8.703601893224977
1971	7.816593442117384
1972	10.748862041399597
1973	10.40121685595219
1974	8.008642302095998
1975	6.4922536676168
1976	5.0221559251542285
1977	5.100881785377039
1978	5.468533059639665
1979	4.483335567080089
1980	9.662349113676424
1981	6.51937139814158
1982	5.622635431431914
1983	4.887102546338621
1984	5.4915574542146475
1985	4.985624679170678
1986	6.692145338135274
1987	7.310039138707604
1988	7.169336453452529
1989	7.536278737131095
1990	8.177426523180555
1991	10.22072107000942
1992	10.047830014908687
1993	10.797295731854254
1994	11.230658155879276
1995	12.004572682790917
1996	11.645018779128002
1997	11.384492572972567
1998	11.850793067684162
1999	10.47765922928081
2000	12.406018432677918
2001	13.193979735834615
2002	14.567861459062053
2003	13.673405758003518
2004	12.296305101461936
2005	11.404967656969312
2006	10.230726829685082
2007	10.176601367083514
2008	9.173325636742478
2009	11.495818397844987
2010	10.661077020399686
2011	10.260570405114237
2012	10.707815664229816
2013	11.551095945322116
2014	11.977548927219326
2015	14.272255793799014
2016	14.652581022856811
2017	12.290264274874493
2018	10.998214049469366
2019	11.185549248172633
2020	13.117919707276862