Year	% of total merchandise exports
1960	2.0139893873613124
1961	1.3978449889753297
1962	1.3459506637879555
1963	1.5973401756351413
1964	3.927422238112263
1965	2.8129920301264466
1966	2.3781470496621027
1967	2.457821361905741
1968	2.710586550336358
1969	0.8442473601679878
1970	0.9944122911048991
1971	1.0573387573272803
1972	1.2556324473916973
1973	1.2175129730165613
1974	1.4374906593513104
1975	1.3764167948104322
1976	1.4141404715021926
1977	1.2470881140081767
1978	1.4553762873431355
1979	1.4256777177870068
1980	1.4550313002996298
1981	2.866336174106315
1982	3.6150705794334477
1983	4.7698940724529235
1984	4.832090172937939
1985	4.468174138596374
1986	3.2141960583382985
1987	3.5768560064043027
1988	3.5659644783850397
1989	3.410952393547903
1990	3.261814149840488
1991	3.375544336814666
1992	3.812660825335216
1993	4.206414041418735
1994	4.60686782251927
1995	3.8054755707692256
1996	4.808242673438943
1997	5.5073334861876475
1998	5.31661389918387
1999	5.8487482849614665
2000	6.313639688998631
2001	6.312173004930739
2002	6.416939553205124
2003	6.658816984956095
2004	7.043444336535072
2005	7.357736971393547
2006	8.748267850392784
2007	9.079110567489836
2008	9.538040744479815
2009	10.105697296872197
2010	10.61200651042708
2011	11.61734565098603
2012	11.168658707264111
2013	10.930814497728065
2014	10.858488356510012
2015	10.85641326614176
2016	11.277079363817116
2017	11.638105361955322
2018	11.936641430152394
2019	11.840043993492788
2020	11.215103655865322