Year	% of total merchandise imports
1963	4.113973867870073
1964	4.095495938961358
1965	3.7970106075216976
1966	3.3798243672053725
1967	3.9015722177154557
1968	2.341364099083814
1969	2.4217245921572603
1970	2.8319697923222154
1971	3.5951233342784237
1972	18.54509990247318
1973	17.804032478788432
1974	20.878304092661693
1975	7.689787618617262
1976	12.180164359505548
1977	13.766355972075637
1978	11.278020649241931
1979	11.81743528346342
1981	12.563909403018252
1982	13.68359375
1983	15.114045293433264
1984	14.690108875466471
1985	5.52350769278806
1986	0.9323951977957095
1987	0.3287740521401926
1988	1.5831066497358621
1989	0.8591743566641725
1990	1.9818061363328767
1991	0.6842468797799726
1992	3.6847340731322715
1993	4.129070154207624
1994	5.976682008804046
1995	5.033441583007598
1996	1.1629611818453724
1997	9.952793901671447
1998	16.417505761717546
1999	1.5193151767945259
2000	6.561631986986141
2001	1.9861588381745774
2002	28.178900274443
2003	28.638466483199704
2004	34.52380099781011
2005	0.42701537545513263
2006	11.696190475163363
2007	2.5056609744402105
2008	14.167245333906001
2009	4.208943572156636
2010	1.7194211920896718
2011	0.7751981585315771
2012	0.6331293886601795
2013	0.4292552103574358
2014	0.46357918478155785
2015	0.0892421012257446
2016	0.001923140361372286
2017	0.002178166921750967
2018	0.02713309591148111
2019	0.011893596746266175
2020	0.0024228428153108203