Year	% of total merchandise exports
1966	0.1371742112482853
1967	0.12903225806451613
1968	0.1148105625717566
1969	0.047963931123794906
1970	0.004859417064328963
1971	0.014419220821354866
1972	0.1512147585604355
1973	0.081029843444227
1974	0.11556263434904705
1975	0.5244588158460631
1976	0.04666711111534396
1977	0.07751404655429422
1985	0.005322156804044839
1986	0.006334593213539137
1987	0.0038621853433037133
1988	0.01603580865794226
1989	0.0404231541590275
1991	0.05134943686398942
1992	0.006326646278402312
1993	0.022185475100574698
1994	0.0063614802258278895
1995	0.9331652453138612
1996	1.1536252856551548
1997	0.14562517100972747
1998	0.6796709698103155
1999	0.4853465692627765
2000	0.23298730903064374
2001	0.40332910550525725
2002	0.27546819092015234
2003	1.5714422774500696
2004	1.4934143625861929
2005	1.255653101042405
2006	1.5675971628735856
2007	3.6981103442746868
2008	4.811517366355302
2009	3.172342860689544
2010	6.1674956372531735
2011	7.009555844206961
2012	6.82649847961946
2013	9.056638072667276
2014	14.012982173327531
2015	10.497741490784911
2016	10.216564014487664
2017	13.403143109707743
2018	12.482569431527354
2019	11.66541456413464
2020	25.057916530324743