Year	% of total merchandise imports
1960	100
1961	100
1962	100
1963	100
1970	64.47950003779957
1971	62.83024050650011
1972	57.04645553512396
1973	47.46868337593738
1974	43.936662408104326
1975	43.87812224901998
1976	44.13354057829736
1977	49.69277404306445
1978	48.61181270094192
1979	49.72113049169751
1980	50.18339528533807
1981	59.05807658326597
1982	55.75415935218167
1983	56.1933503888557
1984	56.713228531906154
1985	55.691872182334336
1986	54.55366508413799
1987	49.501016208523644
1988	42.817652014456165
1989	34.79749039139221
1990	27.59877969526369
1991	23.019829660799836
1992	4.408635828926955
1993	2.3871903487258863
1994	2.755557719144517
1995	2.748929749530994
1996	2.7174115731154194
1997	0.21552340368416115
1998	0.18488306228662446
1999	0.1099402919961637
2000	0.13917153435511398
2001	0.14096108276341682
2002	0.1407608435924792
2003	0.19970584769709826
2004	0.11214904658517466
2005	0.13489302554899274
2006	0.49407553965883183
2007	1.0327801863454884
2008	0.6224684467387099
2009	0.3087534211440327
2010	0.46242509590918535
2011	0.3403265332371451
2012	0.4313404764653619
2013	0.4530739657621651
2014	0.44669604394424667
2015	0.45398959093615915
2016	0.3618896083846682
2017	0.20062951259986656
2018	0.3248492829762157
2019	0.5193630238764786
2020	0.48558193228787955