Year	% of total merchandise imports
1974	0.2857142857142857
1977	4.31266846361186
1978	1.7208413001912046
1979	5.147058823529411
1980	3.3674963396778916
1981	0.14084507042253522
1982	3.3333333333333335
1983	5.415617128463476
1984	7.659574468085106
1985	17.22017220172202
1986	4.133946687853674
1987	5.534603824659576
1988	6.152479023563337
1989	9.912362310696244
1990	6.21640305777304
1991	5.911313689364818
1992	8.793587227102403
1993	9.422231742105442
1994	5.395266014021415
1995	6.873837223251877
1996	4.751091361415084
1997	7.539584864318745
1998	7.272630157568745
1999	8.232573839326035
2000	10.259196775386933
2001	9.023901900194332
2002	10.16708684092111
2003	10.283506156378456
2004	11.004897106300207
2005	13.559632448442258
2006	11.741350625830108
2007	11.523377238943851
2008	12.439603276761394
2009	11.1824240981498
2010	12.725332548878091
2011	10.975945996699084
2012	11.345942909254788
2013	13.688845800132812
2014	12.493019734106008
2015	16.24294835497178
2016	14.83949374263811
2017	13.678327677974439
2018	14.076287263603524
2019	13.496376358529826
2020	15.892259964781985