Year	% of total merchandise exports
1960	0.05098139179199593
1966	0.2736638763683194
1967	0.6222345132743363
1968	0.7223693715386468
1969	0.8604926320318382
1970	1.299350324837581
1971	1.5485505801198953
1972	1.9511090637955668
1973	0.6130089405975246
1974	0.5569015016489323
1975	0.3715320483630034
1976	0.07895886824371846
1977	0.2667394085463652
1978	0.039576215332910974
1979	0.08009627775361372
1980	0.05786988877330559
1981	0.32483429239298106
1982	0.10238866213310005
1983	0.5876586309528382
1984	1.3505437704148031
1985	1.438157239058047
1986	0.6644649162252524
1987	1.2349793121448371
1988	1.7602135640599588
1989	1.8476247895616078
1990	1.868262572307813
1991	0.6244122772536632
1992	1.8695582448174979
1993	1.6528805333685548
1994	1.5347866348035348
1995	5.448441224609289
1996	9.644024602146787
1997	6.0452654001964
1998	5.9485898409690865
1999	5.0339896164758215
2000	6.1003484225337745
2001	5.154659137803294
2002	5.133803662734325
2003	4.612661896248545
2004	3.239950446180932
2005	3.732760402205051
2006	3.3893124565503294
2007	3.560971515066844
2008	3.812249903233765
2009	4.44737112914677
2010	4.771556356240504
2011	3.5240231396065713
2012	3.8288436674607365
2013	4.319337290037814
2014	4.329366585579475
2015	5.292360789802757
2016	4.857190374473996
2017	5.426463217861725
2018	5.760274228171903
2019	8.122778771408521
2020	8.122778758276105