Year	% of total merchandise imports
1968	6.25
1970	5.147058823529411
1971	4.901960784313726
1972	5
1973	3.0444964871194378
1974	3.454515926965641
1975	3.033675118565032
1976	3.7249736564805054
1977	2.9531626678911715
1978	1.914788819110947
1979	4.171179153949657
1980	6.217174011812812
1981	8.204055545871826
1982	5.9887277385777296
1983	7.888783790608857
1984	11.12672279102287
1985	4.09962332521809
1986	8.467340308533132
1987	7.782044525891756
1988	5.359597700005585
1989	7.836793492420134
1990	9.306859410470821
1991	7.595432466229396
1992	8.200570072556353
1993	3.9177665261578802
1994	5.225416597131204
1995	4.5063356902115395
1996	10.311173764892763
1997	12.419640450939635
1998	11.480767152379059
1999	15.383241137653197
2000	21.91681444744577
2001	18.787152579240114
2002	18.56387873163317
2003	14.107688286522752
2004	29.852578033285866
2005	42.42674585935309
2006	36.23622933959047
2007	26.5938111462695
2008	29.697534588128143
2009	21.912104644539777
2010	21.555712668230452
2011	19.575486405521865
2012	21.14211768605178
2013	27.10831898240954
2014	24.960287195334946
2015	17.33704086548988
2016	19.59746126101066
2017	13.887713886550593
2018	13.151206447067985
2019	15.14336019368893
2020	18.87096563917954