Year	% of total merchandise imports
1961	0
1962	7.78097982708934
1963	2.73224043715847
1964	0
1965	0
1966	5.88235294117647
1967	2.801120448179272
1968	12.9973474801061
1969	9.020683262200428
1970	9.260477453580902
1971	5.581579207431565
1972	4.234896493451626
1973	3.630490956072351
1974	5.928791862672817
1975	6.029839363172694
1976	5.253686126822219
1977	4.695572495272259
1978	9.909589868381321
1979	7.699888092732708
1980	5.228287806448903
1981	7.501513484174771
1982	7.1364947954350875
1983	7.9157821472072385
1984	12.322604804096187
1985	6.942540710673725
1986	5.7306323546142295
1987	7.7482155441099225
1988	8.835603235823035
1989	9.708954620058046
1990	12.931619530741548
1991	23.956810105328525
1992	6.359546062888696
1993	6.604238477734219
1994	6.899284888663006
1995	8.568300075984386
1996	8.014334446153901
1997	4.212706739227503
1998	23.791296406417644
1999	4.4584232748674335
2000	0.9839299855141301
2001	2.0412711057581507
2002	2.9613135125300705
2003	2.1570285556465967
2004	3.590909980766278
2005	5.6037041699275845
2006	5.7055714332058605
2007	5.997616532126385
2008	5.168262209231029
2009	0.38090071192364106
2010	0.9338084054450866
2011	0.5482157157074616
2012	5.248689064455235
2013	0.2293648418816409
2014	0.1864877173818588
2015	0.46629652413733996
2016	0.43966806669217157
2017	0.28752117234349883
2018	2.0573005601627723
2019	2.292089901064055
2020	1.6180668267117646