Year	% of total merchandise exports
1960	0.35507160610723165
1961	0.45483259633607076
1962	0.29265809899478307
1963	0.7294429708222812
1964	0.2623196552370245
1965	0.3415369161225515
1966	0.26010218300046445
1967	0.31516876779178526
1968	0.3509475584077008
1969	0.2248637442739158
1970	0.34675495157814784
1971	0.5626350696773231
1972	0.832848577053875
1973	0.6201065796125009
1974	0.15784800552468017
1975	0.6551839340732767
1976	0.33744173410735223
1977	0.32460926372859283
1978	0.6044704063592427
1979	0.7023476897914678
1980	0.7462507276776226
1981	1.3238925574663019
1982	1.076926068044477
1983	1.0386263400513591
1984	0.7388454728332916
1985	1.0893850363913204
1986	1.135831736613652
1987	1.3328705598637123
1988	1.184557202313682
1989	1.3205330036980132
1990	1.558248523788847
1991	1.4474354294211813
1992	1.5334662792048988
1993	1.809955318505083
1994	1.368537623579988
1995	1.4927724566565477
1996	1.3943212086902759
1997	1.385060971740233
1998	1.634257674417186
1999	1.6144362650080406
2000	1.3673577545705438
2001	1.252909869667667
2002	1.3162289079563365
2003	1.3234922572201917
2004	1.403356884340039
2005	1.5975018407387038
2006	1.9517753334614985
2007	2.0683760885983773
2008	2.3640923999656187
2009	2.5839929728571684
2010	3.202702368440444
2011	3.295269295647718
2012	2.8416443720959483
2013	2.350544011009769
2014	2.495357756856878
2015	2.4102290313057657
2016	2.5167371648465733
2017	2.9019555215188344
2018	2.735120494022659
2019	2.6719165429382765
2020	2.2957926196323775