Year	% of total merchandise imports
1970	4.545454545454546
1971	2.8368794326241136
1972	1.5384615384615385
1973	1.6260162601626018
1974	1.6260162601626018
1975	1.3201320132013201
1976	2.127659574468085
1977	1.9867549668874174
1978	1.4010507880910683
1979	2.3894862604540026
1980	2.97741273100616
1981	3.9742212674543502
1982	6.275720164609054
1983	3.804994054696789
1984	3.480278422273782
1985	1.6985138004246285
1986	1.1143702606345638
1987	1.7932489451476792
1988	1.6408220027851785
1989	1.989033437348485
1990	1.45713998564058
1991	2.4240429962043746
1992	2.475862663018599
1993	2.6709834068514136
1994	1.9179133101837467
1995	2.9002383287696363
1996	2.7301709959452904
1997	2.8183901973350682
1998	2.679102996835464
1999	2.236421725330997
2000	3.722167392658393
2001	1.629773749442311
2002	2.1426154774806894
2003	2.208336158575785
2004	2.75345500512385
2005	2.6553167056256943
2006	2.9459529626347223
2007	2.651643653026568
2008	6.355013414156785
2009	2.3110095104627897
2010	2.4105937567925904
2011	2.1955341956098167
2012	2.796411592670079
2013	6.687579396527271
2014	4.7356082134964215
2015	4.69458744293382
2016	3.998562775026706
2017	4.196591367264175
2018	6.1501855984318965
2019	5.149278595165286
2020	8.023078406970633