Year	% of total merchandise imports
1968	0.02671210795376042
1969	0.05843617809951594
1970	0.1796939191310563
1971	0.13360094567305325
1972	0.1869253026343036
1973	0.48639288760240873
1974	0.14978104923011848
1975	0.19776032656117437
1976	0.38274731413084045
1977	0.4014897611439423
1978	0.41320413998361394
1979	0.9456786861454918
1980	0.7831502119123337
1981	1.0586465913423069
1982	2.1480120382065966
1983	1.65550685623767
1984	2.157859377065069
1985	2.1578593772940224
1986	3.1802106483718227
1987	0.7077403002534608
1988	1.2015121234740314
1989	0.8498767756077625
1990	0.6309346732203132
1991	1.263958658192706
1992	1.180253975544551
1993	0.5745572397626941
1994	3.176565610266106
1995	0.6936265312179817
1996	0.9694028117756475
1997	0.5110469629907889
1998	0.15265241828402
1999	0.3519414697936695
2000	2.045333566925357
2001	2.0460833090827184
2002	2.0461763975787677
2003	2.045705485563991
2004	2.0457074206489834
2005	2.046020569534789
2006	2.0463335035189463
2007	2.046333661725254
2008	2.046333305002933
2009	2.046333531120632
2010	2.04633323060689
2011	2.046333614890265
2012	2.046333637056637
2013	2.046333363080808
2014	2.0463334784560283
2015	2.046333384332963
2016	2.0463334345669564
2017	2.0463333673142516
2018	2.132825773357166
2019	1.4041044040348376
2020	1.404104046501457