Year	% of total merchandise exports
1960	10.156808316703444
1961	8.321889928407387
1962	10.124337949729938
1963	14.240673446802587
1964	12.787202200380213
1965	13.478451190764037
1966	13.686127045190005
1967	13.325042862851467
1968	15.776114282990102
1969	12.480610780240267
1970	13.77162654494774
1971	9.951309795466718
1972	11.275067897384597
1973	11.178460674310848
1974	12.189307069463926
1975	17.639255395234166
1976	12.423963488489756
1977	12.06814581942233
1978	14.81505487873859
1979	16.335082474198686
1980	17.813264545310144
1981	14.900676492363546
1982	12.445675618558639
1983	16.086576313151713
1984	16.815823173424643
1985	18.411799061004032
1986	20.295036150875003
1987	20.101088265556424
1988	19.027730043630047
1989	20.74440981262045
1990	16.93308951615181
1991	15.646816694659934
1992	11.77258781919377
1993	8.64640629216462
1994	11.444945892813257
1995	9.916768685997438
1996	18.224761732985733
1997	14.75491600980519
1998	5.316639076342619
1999	6.649681624804034
2000	5.935124131957267
2001	5.975961653254154
2002	5.251812739619718
2003	4.5826613266683465
2004	4.417686080976198
2005	7.175185582375186
2006	6.8331554501850675
2007	7.543990972297614
2008	6.3116127977000085
2009	6.957701466591182
2010	7.067306935677195
2011	5.311824962674638
2012	5.1094214125927095
2013	5.820012502032287
2014	6.335199384402411
2015	5.740895865513703
2016	5.819440493914276
2017	4.709739416653476
2018	5.052723482834003
2019	3.816123993865398
2020	3.19333595188087