Year	% of total merchandise exports
1960	7.810741276732594
1961	7.738070474684861
1962	6.57816160595342
1963	6.9278305807524125
1964	7.306042188058634
1965	7.403379486097358
1966	5.861401156570376
1967	5.693249744860767
1968	5.486512811539438
1969	5.567769388720012
1970	5.341655993727094
1971	5.1899460576150585
1972	5.074540133846374
1973	4.814345835231248
1974	3.6688504764590637
1975	3.959235007179445
1976	3.7227654398267958
1977	4.212344252784411
1978	3.5344803580581825
1979	3.980618433388573
1980	3.7440322795995287
1981	5.4623805289412415
1982	5.902097623916917
1983	5.727017945987013
1984	5.863350067557391
1985	5.904259637614808
1986	8.10935055232966
1987	7.8125431695034235
1988	8.592367654298274
1989	8.541676917142173
1990	8.137682443813727
1991	7.15958042038582
1992	7.161228810991073
1993	7.684323422420998
1994	8.101483782985571
1995	8.168560420019713
1996	7.358838640197854
1997	7.414720977226009
1998	8.712276364286254
1999	7.334190244798276
2000	9.03931100280616
2001	9.748876638633082
2002	10.828483474780613
2003	9.98728083177907
2004	10.501316299217878
2005	9.327745808191294
2006	9.194006888114163
2007	10.674353410821865
2008	11.470480046742866
2009	12.79004735993107
2010	11.839822282338726
2011	9.889165295519433
2012	10.67070641895497
2013	11.41143520561656
2014	11.624737538094067
2015	13.660606228343594
2016	12.980877553185929
2017	12.502756138096766
2018	10.902370150118228
2019	11.371883174539088
2020	13.210184313757651