Year	% of total merchandise exports
1960	3.989341454130187
1961	5.121527777777778
1962	4.325608176191162
1963	3.1846729683435897
1964	2.9674292132174735
1965	3.2152588555858315
1966	3.251219207202701
1967	3.151862464183381
1968	3.3648068669527893
1969	3.018568654798042
1970	4.606963060307987
1971	6.048536231471735
1972	4.285561918514022
1973	2.7508730649736135
1974	3.768881670581342
1975	4.461243392002347
1976	3.493294007453317
1977	3.9602661978821696
1978	3.970447290372729
1979	3.530013909075281
1980	4.068198244096634
1981	4.531824287800727
1982	3.1704404217706745
1983	2.576139269205126
1984	1.7187267756575777
1985	1.5307594713595165
1986	1.54704055363152
1987	1.4190822981553999
1988	1.4537951977449923
1989	0.38639808519222435
1990	1.4635285128106121
1991	2.0500461578932905
1992	2.5836824753266874
1993	2.2668635269545447
1994	2.663022741291715
1995	3.7943459143431104
1996	3.7694420208349557
1997	3.8137517754207395
1998	4.384875754303783
1999	3.9165126856037276
2000	3.5673536762732763
2001	4.236894173296729
2002	4.320558686460544
2003	4.344514790886233
2004	4.59727167802429
2005	4.769512292207141
2006	5.610474599687073
2007	6.087396202127174
2008	5.7493138848017225
2009	5.735108348064024
2010	6.048307864714881
2011	5.956084202915543
2012	7.219487410707376
2013	7.912599155162018
2014	8.622468798844261
2015	7.758854545898567
2016	6.888281415020126
2017	6.549802168717001
2018	6.3099214585994945
2019	7.262812323964256
2020	7.840930932510886