Year	% of total merchandise imports
1964	6.067961165048544
1965	5.124378109452736
1966	1.5665796344647518
1967	4.8284625158831
1968	1.1379800853485065
1969	2.140559724943621
1970	2.3756700812058806
1971	9.77604959556868
1972	8.13468345839728
1973	7.4622799664710815
1974	5.66753780398878
1975	3.2798425675567566
1976	2.264574644929861
1977	2.3848859291304385
1978	2.1908798942048833
1979	2.7551224888532637
1980	2.2122199685498756
1981	2.423620453735325
1982	1.95370523188645
1983	1.7783113245298119
1984	0.9073571697848214
1985	1.1696052004580273
1986	0.8215149416068152
1988	0.5210154358946711
1989	1.169667023092373
1990	1.7133246207196906
1991	1.409917465541385
1992	2.052255597879936
1993	3.0670603800435963
1994	4.60262176925642
1995	9.892472688542476
1996	4.0355621025260024
1997	5.1067878307492
1998	3.845295222639801
1999	6.34407964187709
2000	10.330131961549206
2001	12.155614057130396
2002	7.491293395306204
2003	11.094098583615626
2004	13.227470655425321
2005	10.2791599374827
2006	8.694684319661139
2007	12.531152695529743
2008	11.40039828980214
2009	14.449824829474137
2010	22.516097397462026
2011	25.50115425620473
2012	23.671391714615154
2013	22.172333617479087
2014	26.924394898019266
2015	29.61664248725258
2016	30.455609962535817
2017	32.37109511932106
2018	31.061878090277812
2019	33.78801134206274
2020	35.90789147855565