Year	% of total merchandise exports
1960	8.123015203223046
1961	8.407712108926543
1962	8.442242592278859
1963	8.030140475697516
1964	8.072617139571337
1965	8.220338814994571
1966	8.585953700794176
1967	7.753447026189393
1968	8.726772216242866
1969	8.660939413426282
1970	8.665027753830689
1971	8.241006459614571
1972	6.1500192281252675
1973	8.19440244276707
1974	7.1420182376905395
1975	9.895645480443909
1976	9.09011102834992
1977	8.132429513483197
1978	8.298959694698995
1979	8.916206327191176
1980	9.683173900500206
1981	11.355783297429419
1982	9.333376121563246
1983	8.71353493704608
1984	8.525831909014718
1985	8.40340671450089
1986	7.054589208231697
1987	7.735316957481532
1988	9.026173876617156
1989	6.872508309615714
1990	6.577058078837268
1991	5.53198226930569
1992	6.027110305380581
1993	4.049956107159165
1994	5.950284938181187
1995	6.055372379860778
1996	5.683230012494792
1997	4.536620757410694
1998	5.023686735959967
1999	4.467408479922595
2000	4.02400111165888
2001	3.4705699775885424
2002	2.665644027851412
2003	2.3712890171391594
2004	2.974843706407521
2005	2.96701398408557
2006	2.9685512639575173
2007	3.2327317947495846
2008	3.9561885140061213
2009	3.2765408695785503
2010	2.6816099336664165
2011	2.668819650889447
2012	2.9050344142137954
2013	2.6558814924332754
2014	2.4932875999489146
2015	1.8884398386360517
2016	1.4315711530826734
2017	1.1525702785087788
2018	0.9437529651920122
2019	0.5636839620806449
2020	0.6620159097039476