Year	% of total merchandise imports
1964	0.15527950310559005
1966	0.1447178002894356
1970	0.07691097554580573
1971	0.16735765090715454
1972	0.09701391179495139
1973	0.10554089709762532
1974	0.1775162317924276
1975	0.1396706150856151
1976	0.6793563512118326
1977	0.9612235540708718
1978	4.551528811057702
1979	2.256560609183209
1980	4.144508172753765
1981	7.953593481418972
1982	8.154553764755192
1983	1.7407753579961784
1984	4.40881050281585
1985	2.8943506754965784
1986	0.7894611133564606
1987	0.6660879567171748
1988	0.7911872083769657
1989	0.5639540164143623
1990	0.9349755812990496
1991	1.3345566229168817
1992	0.48483603990874563
1993	0.24337632779128127
1994	0.3623744325475976
1995	0.2687322846287174
1996	0.1693675796706234
1997	0.25224686507566263
1998	0.25836472159994306
1999	0.6003213766064879
2000	0.32146940176055905
2001	0.6744525054562374
2002	0.7075363625143266
2003	1.1881846114294885
2004	1.1082771086193337
2005	1.8794639191815954
2006	1.0985235863284986
2007	0.9201474060541837
2008	1.6359217003070063
2009	1.2124390535232228
2010	0.7547076467686761
2011	2.514113318261988
2012	6.616721282471072
2013	3.9612541619180126
2014	2.2526312323924533
2015	2.109678428896016
2016	1.1935654119354753
2017	1.053774994626569
2018	1.2624822037021515
2019	2.12955852268104
2020	4.304524735765861