Year	% of total merchandise imports
1967	0.2763156076871002
1968	0.9966379588265094
1969	0.7465875888535171
1970	2.2378238999592517
1971	9.24370782642959
1972	6.16405773417431
1973	6.9537125578269965
1974	19.019419529091156
1975	13.944971302108335
1976	13.515889774785267
1977	0.24605339033389553
1978	6.3257645426120686
1979	9.896697025923348
1980	27.0060629174916
1981	19.389738626985224
1982	23.16164024067074
1983	0.612007891233151
1984	1.481618132957399
1985	1.4816181330120957
1986	0.29336167745675906
1987	0.04711769675700267
1988	0.5844171479480044
1989	0.04210682749823523
1990	0.08328278313821222
1991	0.23777432980262536
1992	0.5260819983736795
1993	1.2261701202436281
1994	0.2779212992221088
1995	0.5389583956472134
1996	0.2961685724603725
1997	0.3689040565173023
1998	0.22512261245833232
1999	0.37125051632604966
2000	3.9917324971489276
2001	3.993195371545788
2002	3.9933767956546107
2003	3.992458245665194
2004	3.9924610094090753
2005	3.9930731147254455
2006	3.993683969176381
2007	3.9936836418788673
2008	3.993683439623706
2009	3.993683691120654
2010	3.993683566045786
2011	3.9936835768954717
2012	3.993683707408037
2013	3.993683511058868
2014	3.993683508989956
2015	3.99368359689114
2016	3.993683544470048
2017	3.9936834161506063
2018	4.4824314065168664
2019	3.271994823550317
2020	3.271994923468615