Year	% of total merchandise exports
1960	95.28864059590316
1961	97.51794871794873
1962	97.41503976861895
1963	98.51178172798677
1964	98.34126444595513
1965	98.96474904992793
1966	97.68524042477031
1967	95.82251884810283
1968	97.14961561206387
1969	93.43366913460372
1970	97.62614127823161
1971	98.11236357130076
1972	97.41524630080539
1973	96.3371322554996
1974	97.08458083832335
1975	92.03430833516605
1976	90.89631067961164
1977	87.88700844612816
1978	90.44405969068524
1979	91.98462912771603
1980	86.88441872400428
1981	87.22660783957265
1982	85.53733002378571
1983	89.2814374897422
1984	90.41957413674344
1985	88.14817383314082
1986	90.11731181230111
1987	90.90198914755082
1988	92.20619551946393
1989	92.5014874796039
1990	92.55191442285387
1991	91.5138157106425
1992	93.5477401599845
1993	90.77020689929384
1994	91.17361721895277
1995	88.97738690604766
1996	85.84768018675226
1997	90.62200430282854
1998	90.29634269923885
1999	88.29915213032207
2000	88.96394071089556
2001	87.81277358856867
2002	85.74808630801662
2003	81.30851111683775
2004	81.29536482775144
2005	77.810095233295
2006	78.44834234337847
2007	76.71888321997852
2008	77.18601662163806
2009	80.49154518717123
2010	77.46722486916049
2011	74.5402931025385
2012	76.04181509291806
2013	76.3237506375033
2014	76.03886253296605
2015	76.5286582357138
2016	77.45310434836071
2017	76.39808168200616
2018	73.75553690114359
2019	72.27170260080383
2020	71.52961150119664