Year	% of total merchandise imports
1973	0.6694018570503131
1974	1.149648742985895
1975	0.7345821229423354
1976	0.618370842222289
1977	0.6349300100407537
1978	0.7343839443414274
1979	0.6849067005766577
1980	3.285502283432698
1981	2.5203624627486354
1982	3.2453176836472397
1983	3.915044374891531
1984	3.5824360451586172
1985	3.5824360418858316
1986	3.1910452651352927
1987	2.8218000749561374
1988	5.7560088086499945
1989	7.43481611610797
1990	8.429355092696634
1991	7.13612000829722
1992	7.366729583688008
1993	9.026262550165875
1994	1.6357573089077166
1995	2.657582247757517
1996	2.4323446541117435
1997	1.996748265099623
1998	0.3632665984731749
1999	0.3911758546264966
2000	44.640527400854005
2001	36.30525430925881
2002	33.755500243482246
2003	36.89733877959531
2004	42.162846077429236
2005	44.790605411180145
2006	54.710094630511385
2007	50.93674569943965
2008	42.83602923128084
2009	43.2201258600564
2010	36.80171463121536
2011	0.5098697212708313
2012	24.28783871485497
2013	0.7394015081652948
2014	0.6822843910613899
2015	0.8417852349434114
2016	2.9940706124368615
2017	0.20665819980578531
2018	0.5725284094079363
2019	0.36890815820091294
2020	0.38706625346612655