Year	% of total merchandise imports
1964	3.6910761932997334
1965	5.054819877545209
1966	2.622549019607843
1967	3.819408406850026
1968	4.151428289018484
1969	3.934571175950486
1970	3.4217279726261762
1971	5.052445736836639
1972	2.550941648656993
1973	2.7490402758800183
1974	3.920101573482066
1975	3.2872640808441074
1980	10.088839238216831
1981	11.907011907011906
1982	11.744715557670087
1983	9.408711422407054
1984	11.78994336654893
1985	12.451057166504954
1986	8.094834885123346
1987	11.409395974056352
1988	10.331163317619106
1989	3.302532997677796
1990	1.0060283764178641
1991	1.352945124749035
1992	11.65095524353155
1993	4.386721854611159
1994	7.921807368726605
1995	7.170155154534953
1996	5.809554700298312
1997	5.632802916110492
1998	7.093154866355034
1999	6.235593787367743
2000	11.055311658947616
2001	11.170407293898586
2002	9.400496778107561
2003	7.1547914527817795
2004	11.2375251944743
2005	19.449996280989353
2006	20.465770418349052
2007	17.69285198644892
2008	17.180805983671238
2009	25.7562895577908
2010	24.62713092818279
2011	21.937470053192378
2012	18.96491314004044
2013	39.109596123291404
2014	31.101795450716658
2015	28.510817083903074
2016	31.06081682819386
2017	21.378875406423408
2018	30.290599682567372
2019	32.199343424347795
2020	29.079204076753758