Year	% of total merchandise imports
1964	0.73389654618028
1965	0.9536784741144414
1966	1.0504814706740588
1967	2.6108825674881726
1968	2.2481050920871297
1969	1.9766163210206182
1970	2.153627990488734
1971	2.478325435799746
1972	2.792283806310846
1973	3.2782955235810487
1974	4.211787876121159
1975	4.0650501942337876
1976	3.5442482696812547
1977	3.8133241646969838
1978	2.8835986308513086
1979	3.859555084884285
1980	2.986137798906
1981	2.557176927629751
1982	3.73420652436311
1983	3.734206530420285
1984	1.6781195227798191
1985	2.605803607148926
1986	2.9697507276302595
1987	1.872264497054228
1988	2.1176148636533343
1989	1.7364595024150151
1990	1.201906491235785
1991	2.815147007207408
1992	1.0805482727004383
1993	0.9256025415106003
1994	0.9980372653529079
1995	0.6201231471299983
1996	1.1322968020919624
1997	0.08763045755166549
1998	0.04835765639238911
1999	4.386756455588943
2000	0.003762673611217659
2001	0.016759659693545242
2002	0.0153346709506966
2003	0.01942945726232289
2004	0.012906685219126265
2005	0.008248574760388492
2006	0.0117552970413797
2007	0.09733544399293043
2008	0.02593857350149643
2009	0.007063968758169819
2010	0.009380714097406739
2011	0.022409195659718946
2012	0.0019222045448504105
2013	5.166526684025703
2014	3.5015475783861403
2015	5.092433618868166
2016	0.2674517630785166
2017	0.07459536923762486
2018	0.21365425952887168
2019	0.012756391701055839
2020	0.014146457767558102