Year	% of total merchandise exports
1960	0.003327751030978866
1961	0.0019333205476401115
1962	0.0025894622204860494
1963	0.003565369868074524
1964	0.003962663781847434
1965	0.007024820481401306
1966	0.00688471519372775
1967	0.004506148105467108
1968	0.005766948227253745
1969	0.004353791307952788
1970	0.003639706993749957
1971	0.00303624947085232
1972	0.0029151888561372618
1973	0.0029267306686112595
1974	0.002568820561867305
1975	0.001966554293321346
1976	0.0018031440656930732
1977	0.003158058698986783
1978	0.0026624761302955426
1979	0.0011813395387635568
1980	0.0028419489594941447
1981	0.010175610219671248
1982	0.010642585653546548
1983	0.016302093753585118
1984	0.019246911892639874
1985	0.013223326012347178
1986	0.0059556185142022
1987	0.002311666045993669
1988	0.0039403238354476285
1989	0.0027177175427716403
1990	0.002955073723255693
1991	0.014977721677081012
1992	0.4062263590201104
1993	0.5546569601140724
1994	1.674646482626881
1995	1.8157212174314294
1996	1.8064476931903848
1997	1.7527245966495903
1998	1.4140996776423949
1999	1.0792974827318769
2000	1.3658492561205624
2001	1.1947897116049206
2002	1.3527004807671033
2003	1.4764723092853174
2004	1.4567626631387054
2005	1.811638702349642
2006	1.995440132295909
2007	2.5013570676459045
2008	2.872040284088789
2009	1.8174269460526205
2010	2.0382614406479824
2011	2.4635230425889283
2012	3.1180277800586844
2013	2.8736208800202783
2014	2.5654309398684236
2015	2.1579731576323455
2016	1.9085889282169817
2017	2.133900309404706
2018	2.1530158132310953
2019	2.3003484309437705
2020	2.2225076918887625