Year	% of total merchandise exports
1960	1.174944894616337
1961	0.911998335491302
1962	0.8371495231730114
1963	0.8489469010689316
1964	1.5606032804773577
1965	1.4342325925029118
1966	1.4028540372008607
1967	1.2864096079411995
1968	1.3587097872622222
1969	0.735958976049101
1970	0.6816424301216113
1971	0.7871478981895148
1972	1.0289569436233243
1973	1.0139276632797105
1974	0.6999752342675688
1975	0.7941326730049978
1976	0.5498336581111102
1977	0.777873530885831
1978	0.9119786665362839
1979	0.8706970342508792
1980	0.8587708677559681
1981	1.8168742691776434
1982	1.5166335262858754
1983	1.5193648098235641
1984	1.6146311737547725
1985	1.5335821921322148
1986	1.4367824277636585
1987	1.3604082246598328
1988	1.5004933860180538
1989	1.3065232621398448
1990	1.3425379986835837
1991	1.2481316104013418
1992	1.1868702128860904
1993	1.2192200939754705
1994	1.3539883284482435
1995	1.450240166815035
1996	1.3336864914492885
1997	1.3575666872522998
1998	1.444944139632941
1999	1.5978871441422546
2000	1.396793255894773
2001	1.3558492167714158
2002	1.5731866296106771
2003	1.75195413798679
2004	1.775110836373285
2005	1.961997024416433
2006	2.3441462365155474
2007	2.8591811010982338
2008	3.058811772502562
2009	3.341771889263449
2010	3.3995695843836264
2011	3.502546975155459
2012	3.684040527922406
2013	3.599270896768543
2014	3.782507955000631
2015	3.880235376128318
2016	4.091344489478374
2017	4.346355493208557
2018	4.49606200840856
2019	4.185013251928176
2020	3.6795361906342112