Year	% of total merchandise imports
1960	1.2135922330097086
1962	0.4618937644341801
1963	0.7874015748031495
1964	1.448794252246698
1965	4.1384990219965
1966	1.9959728165114523
1967	1.4341469097687423
1968	2.8080116389730576
1969	2.8317356205852673
1970	3.505539269806221
1971	1.6361688610969243
1972	2.9786081776333604
1973	1.1742567902675263
1974	0.6238321282250671
1975	1.0277098218384286
1976	0.28085143647065447
1977	0.037779013757857506
1978	0.04103012369244354
1979	0.020133510340445075
1980	0.023556923711147947
1981	0.02362470469119136
1982	0.022908432511205813
1983	0.027213274697443682
1984	0.02602975506533796
1985	0.015348771013081906
1987	0.06290704348410978
1988	0.03424135466200503
1989	0.01326173883592934
1992	0.011059802332828552
1995	0.014248877649174116
1996	0.1350352905361139
1997	0.00505150825250592
1998	0.01250871455310109
1999	0.001136127094786119
2000	0.015947508071171963
2001	0.013078634163787585
2002	0.022885590651901926
2003	0.07268530389187285
2004	0.06962204104181774
2005	0.03757068054529918
2006	0.05008867171698876
2007	0.05503710602357789
2008	0.062447239370782996
2009	0.013716279851850118
2010	0.01501625588527212
2011	0.01706652064809898
2012	0.015200452919641812
2013	0.016007858021378628
2014	0.011460745518062743
2015	0.01237485055540316
2016	0.01156015853426593
2017	0.005262130071376795
2018	0.005578104753005209
2019	0.006786173665088857
2020	0.003931947730506561