Year	% of total merchandise exports
1966	0.7621951219512196
1967	1.5091342335186657
1968	0.4807692307692308
1969	0.3520612758357162
1970	0.05833246914860521
1971	0.039554450852374
1972	0.0047883964095733105
1973	0.4688937309885029
1974	0.020168321449430034
1975	0.007144930448567665
1976	0.4195100450324823
1977	1.0494568850386474
1978	0.24061881290539383
1979	0.27040386382185533
1980	0.2205347497689808
1981	0.022633903791538155
1982	0.02480898085106809
1983	0.47323770025471695
1984	0.03844003354766565
1985	0.0009295425353612421
1986	0.015811776611220036
1987	0.009900671513045372
1988	0.055809729151807555
1989	1.0321168931299378
1990	1.8928439979270437
1991	1.0241361057217715
1992	0.17695409044777088
1993	0.3354015559883905
1994	1.3219197050277502
1995	3.2502394612969034
1996	4.383829297317722
1997	6.338077763613247
1998	3.530741194851709
1999	4.394962110070772
2000	7.3526052068940615
2001	7.24279766833076
2002	5.242317558835356
2003	5.565539488446952
2004	4.866850782057084
2005	3.8226045357767724
2006	4.546469567328056
2007	3.462785203059853
2008	11.334523167314051
2009	12.56672393389249
2010	10.488082059982782
2011	12.24053137645367
2012	17.78497653457234
2013	9.315043615245976
2014	18.757563028320135
2015	17.298854193406015
2016	17.486228858427253
2017	19.1461125348782
2018	25.535317039097755
2019	20.927904120857445
2020	21.26927651894331