Year	% of total merchandise exports
1965	1.506186121570737
1966	1.8125552608311228
1967	0.30410542321338063
1968	1.3641664283042532
1969	0.4326699061439127
1970	0.4179151825275593
1971	0.008137732898377407
1972	0.049491015834031885
1973	0.020412281698765754
1974	0.01958021419355741
1975	0.011134599557843438
1976	0.008584643261847468
1977	0.006238071795148467
1978	0.0424265398297589
1979	0.00016112075597858705
1980	0.0038881222478355025
1981	0.43185275364306874
1982	0.12407428948082665
1983	0.03640366843714227
1984	0.044134909715752416
1985	0.06656075984595211
1986	0.06295933609696183
1988	0.0897554618208899
1989	0.08304808806961782
1990	1.2379043016167566
1991	0.05049486712993335
1992	0.2790562624172223
1993	0.7209492088175812
1994	0.6453442318980218
1995	0.21856680131278547
1996	0.15214202588118259
1997	0.2028421883632218
1998	0.24933800131098524
1999	0.0440953243604987
2000	0.1711390292527675
2001	0.14304134302566612
2002	0.024138938115592434
2003	0.0361123708846202
2004	0.0953541580457629
2005	0.11959083656743953
2006	0.0656607861827955
2007	0.12225494598898821
2008	0.0545017283321527
2009	0.11839596338006765
2010	0.2889643739615571
2011	0.18876662586907073
2012	1.0109935439313733
2013	1.5726429250886207
2014	1.2338938534928596
2015	1.6860374414230341
2016	1.970440799700034
2017	1.7773283702795124
2018	1.140136766212989
2019	1.4966261836333992
2020	0.658517791542167