Year	% of total merchandise imports
1969	0.022143489813994686
1975	0.6539451114922813
1976	0.40461739854813755
1977	1.0679497711536206
1978	0.19607843137254902
1979	0.0587026709715292
1980	0.012068549360366885
1981	0.4505159133846825
1982	0.021026072329688814
1983	0.021026072327532647
1984	0.021026072333871285
1985	0.021026072334586688
1986	0.02102607232938951
1987	0.02102607232898432
1988	0.021026072333611995
1989	1.4156253682538658
1990	11.611396886527984
1991	8.87912120516613
1992	2.7294323834452014
1993	6.69697226231156
1994	6.041918187811433
1995	7.449784490202776
1996	5.2419708022704
1997	4.938733007732464
1998	7.671544178958511
1999	3.9668595466525307
2000	9.183149594346682
2001	9.183210873649665
2002	9.17783635464563
2003	9.137314473522732
2004	9.14562381301188
2005	9.170031113850804
2006	9.1831097083306
2007	9.183006303235732
2008	9.182890211689983
2009	9.182637284804498
2010	9.18206981820075
2011	9.180914360168323
2012	9.178481800047189
2013	9.173287009447781
2014	9.162768907818277
2015	9.140506395126492
2016	9.121808816464668
2017	6.190605090405978
2018	13.91527121000562
2019	17.769583624786208
2020	18.30705508943529