Year	% of total merchandise exports
1960	2.780765479775058
1961	2.4689625655649943
1962	2.5068345435936847
1963	2.5594076739396256
1964	2.5864693549676954
1965	2.4100737432241885
1966	2.1025772230608624
1967	2.0212506931368677
1968	1.5657202392536838
1969	1.1522548663754604
1970	1.1085663178245484
1971	1.1247693506814307
1972	0.9991315825995897
1973	0.9433660179044833
1974	1.00381308934284
1975	1.1206062905527714
1976	0.9286180703909942
1977	0.9208422478552868
1978	1.0446127226279098
1979	1.042124399634164
1980	1.1023399630127007
1981	1.3439721513136926
1982	1.4582925981794281
1983	1.5262517490908472
1984	1.5436697100947365
1985	1.4699137988400475
1986	1.3355720485234446
1987	1.2470463105166236
1988	1.2304158533311582
1989	1.17146952159016
1990	1.0886046784618246
1991	1.0012734533495018
1992	1.0174166234448125
1993	1.1306814041286977
1994	1.0911532087222409
1995	1.1264818734567943
1996	1.1728803714819072
1997	1.1710051518284033
1998	1.1190144738849142
1999	1.203869788826132
2000	1.331194166669887
2001	1.2731167860550316
2002	1.3389129106796065
2003	1.4632984941488427
2004	1.5914203492441965
2005	1.8133373146317207
2006	2.0045575405738836
2007	2.249405958827784
2008	2.5705231726938975
2009	2.6368241708906233
2010	2.9298748592304866
2011	3.070030511723472
2012	3.247386417796663
2013	3.0553494928091833
2014	3.0931136313464713
2015	3.0788231436173294
2016	3.0343087093076906
2017	3.26960201618022
2018	3.3762469100900327
2019	3.2466062202813046
2020	2.7999041765837682