Year	% of total merchandise imports
1981	23.90730865678388
1982	25.882707529172418
1983	19.05590186552043
1984	30.09952838774735
1985	31.241887587926527
1986	38.88066408612125
1987	34.30793925579588
1988	30.85959482707135
1989	29.3260570398293
1990	15.452796012765587
1991	11.904025957814797
1992	15.470652180125729
1993	4.866035683872214
1994	1.1168735480575682
1995	1.9735707679079335
1996	3.3889575835704906
1997	0.19188183945684517
1998	0.25973201052289757
1999	0.12601172383932788
2000	0.8161962618425764
2001	0.45432961464067606
2002	0.9010867487272268
2003	0.50174494667187
2004	0.6145945647729003
2005	0.24925883186807024
2006	0.015125144762400834
2007	0.11120138530957993
2008	0.04581962948523097
2009	0.12661146013300137
2010	0.0993167423679938
2011	0.0051887634002533555
2012	0.20485749847301496
2013	0.5544637917006012
2014	0.24081296963166435
2015	0.44811410354741665
2016	0.14883395601064842
2017	0.09814681298397343
2018	0.021044376217032788
2019	0.02282776293894162
2020	0.010782051680812867