Year	% of total merchandise imports
1964	0.03334444814938312
1965	0.05314908317831517
1966	0.02188662727073758
1967	0.01994415636218588
1968	0.01746114894360049
1969	0.026755852842809364
1970	0.014086491055078181
1972	0.02642007926023778
1973	0.09613438575187208
1974	0.05249711265880376
1975	0.1139195443218227
1976	0.2933225973428424
1977	0.2313393113049175
1978	0.38528259790551733
1979	0.4390430921825595
1980	0.5642038824652594
1981	0.6777198190476731
1982	0.8043390030623916
1983	0.9157593298724368
1984	1.4874257325838827
1985	1.4533123923139122
1986	1.773717586488353
1987	1.682149635401059
1988	1.7224776824286192
1989	1.9379823874087316
1990	1.3504969803405396
1991	1.2817359187661252
1992	1.303169008841696
1993	2.3773754739648223
1994	2.154536209409685
1995	2.482338276273462
1996	1.958561708444154
1997	1.7472915259380235
1998	2.0544548064280916
1999	1.6590756934455793
2000	1.4528123646151474
2001	2.003032038844257
2002	2.3309453915311087
2003	2.8671042963356803
2004	2.8965647074967458
2005	3.0922978995669177
2006	3.382669998605382
2007	3.363930700857605
2008	3.8816277278471505
2009	3.2327469297072295
2010	4.071063006012792
2011	3.8382288588418625
2012	4.348369674754098
2013	3.6905403065753797
2014	3.6479683581404383
2015	3.3565964087591245
2016	3.498637556093002
2017	3.486383688530998
2018	3.2407082484403382
2019	3.0221467152953285
2020	2.763480428471243