Year	% of total merchandise exports
1968	0.12464387464387464
1969	0.17410728951085705
1971	0.10785285372821082
1972	0.21854620275972703
1973	0.006841407619617736
1974	0.12348307430274644
1975	0.004771610282138499
1976	0.01205282581370923
1978	0.001646502499390794
1979	0.16303350609270048
1980	0.11717412531544441
1981	0.06598203258497301
1982	0.011635310581991772
1983	0.15454746165534616
1984	0.02038958465554525
1985	0.07771517388770158
1986	0.175041508724664
1987	0.24560928618059646
1988	0.32716795537142523
1989	0.003582519069739406
1990	0.01185541388608094
1991	0.00626854415547315
1992	0.09929867918455862
1993	0.38815503595417744
1994	0.1483218897457511
1995	0.24772676088082243
1996	0.4351146948655193
1997	0.6360080732342596
1998	0.5689023552691088
1999	0.4455328903236096
2000	0.4654393626526519
2001	0.44400418591538604
2002	0.4224549292719599
2003	0.7357253618729596
2004	0.7762969148021459
2005	0.9576274749735433
2006	0.7989699383064504
2007	0.7856108946490871
2008	0.804987704110253
2009	1.2864560648071854
2010	0.8119279560652728
2011	1.2679660219557851
2012	1.5348730062424554
2013	1.2960848838907038
2014	1.8256419301972002
2015	2.211255887717949
2016	2.713594259417397
2017	4.1115941029726395
2018	4.366100194084348
2019	3.3971111923241084
2020	3.4078225578885553