Year	% of total merchandise exports
1968	0.011023259076651736
1969	0.0034351866165129416
1970	0.022900957599301098
1971	0.0004055791467425911
1972	0.0022237871094473887
1974	0.00024999875000625
1977	0.0006712280340625853
1980	0.42371611020616184
1981	0.3652980117432066
1982	0.8418129034690482
1983	0.6159106344113721
1984	0.6223514011226731
1985	0.6223514010123966
1986	1.138603182696173
1987	0.5984888549122688
1988	1.385915180326201
1989	0.001219553838423751
1990	0.3269428507827842
1991	0.006647937080885026
1992	0.007729810115860858
1993	4.13854845386985
1994	0.37920360841391026
1995	0.518124561222088
1996	1.525003286436337
1997	0.4258990372030856
1998	0.7367724157612491
1999	4.690308412453143
2000	0.749695811401922
2001	0.7504534175786072
2002	0.750502810058514
2003	0.7506262022827846
2004	0.750626123252692
2005	0.7506268974379313
2006	0.7506273490535403
2007	0.7506273585124852
2008	0.7506274113987178
2009	0.7506273780166247
2010	0.7506272268695487
2011	0.7506273530001465
2012	0.7506272898415282
2013	0.7506272747324378
2014	0.7506273634445498
2015	0.7506273066661105
2016	0.7506273623174546
2017	0.7506272984265554
2018	0.08642060711344217
2019	2.363285594410613
2020	2.59597840758594