Year	% of total merchandise exports
1960	1.5781053318865799
1961	1.7071170084439085
1962	1.1571303818679401
1963	1.1484967535949975
1964	1.3331508565024324
1965	1.4098217111395246
1966	1.3611308094982848
1967	1.210650250595776
1968	1.2825639128412603
1969	1.3024200945422166
1970	1.2793938938276086
1971	1.7180246713441365
1972	1.5851245811217052
1973	1.518757722476072
1974	2.7930977137595994
1975	4.576393835724461
1976	3.5318552311002867
1977	3.673777510377882
1978	3.7479633290383494
1979	2.7769991967978247
1980	3.283709193818534
1981	3.7946116069221736
1982	3.492978588938431
1983	3.534886252217569
1984	2.8696880500148234
1985	2.432565028356749
1986	1.9838949961234458
1987	1.5283630808293929
1988	1.2617976105882114
1989	1.0355560623025504
1990	1.1579352318465372
1991	1.1922062993607905
1992	1.1978831037921878
1993	0.9825218718347751
1994	0.7967997752612057
1995	0.748565826723157
1996	0.848649434812725
1997	0.8473581961903176
1998	0.9945366646548147
1999	0.9297523969877642
2000	0.8283583462494212
2001	0.9502876236044354
2002	1.0273722264853564
2003	1.0085075081405435
2004	1.0603445930268451
2005	1.0431973623827744
2006	1.1109454597732962
2007	1.2748280422948834
2008	1.494740725433309
2009	1.7369326888203092
2010	1.6257590045310661
2011	1.4964199165967629
2012	1.5262775614547188
2013	1.5535224355594492
2014	1.7544081303577528
2015	1.6609580792471375
2016	1.6712161160125507
2017	1.4994865759129894
2018	1.3716830551113668
2019	1.3287049793740735
2020	1.266669692754981