Year	% of total merchandise imports
1963	0.2597402597402597
1964	1.4678899082568808
1976	6.1909120840554435
1977	12.417288343374846
1978	9.101403136780775
1979	10.385863157355127
1980	14.0716368225834
1981	11.695332902911602
1982	0.16270088926800952
1983	4.3779660352198295
1984	0.15912846563437175
1985	0.22631321979379077
1986	0.7496282757613324
1987	3.189178593682519
1988	0.13913873125354057
1989	0.1387666689321091
1990	0.10813298055320678
1991	0.13513817879003537
1992	0.1480484521898361
1993	0.12345820138386952
1994	0.18024521145459985
1995	0.22838457085072333
1996	0.2025581153655727
1997	0.2172577821237297
1998	0.24437650828072074
1999	0.259416686366617
2000	0.24665029550357612
2001	0.33672604956663504
2002	0.31271174537633994
2003	0.2413956578468581
2004	0.24197696991235998
2005	0.31191700424604146
2006	0.3286602134675604
2007	0.22061387678649724
2008	0.2304494931965969
2009	0.2665271862687956
2010	0.22534359408601617
2011	0.2410443659920402
2012	0.27751236287728587
2013	0.31618071357308764
2014	0.273509209295521
2015	1.0275885425985405
2016	1.0695101758509398
2017	0.9888123950007297
2018	0.9676381680123055
2019	0.8718811897032568
2020	0.95979872373695