Year	% of total merchandise imports
1964	0.03334444814938312
1965	0.026574541589157584
1967	0.01994415636218588
1968	0.10476689366160294
1970	0.04225947316523454
1971	0.012238404112103782
1972	0.14971378247468076
1973	0.10625379477838494
1974	0.12949287789171596
1975	0.22546576480360747
1976	0.18634612066486456
1977	0.23679864608497453
1978	0.3115678151429821
1979	0.48686374823249084
1980	0.6049777235599874
1981	0.5690235499123051
1982	0.7544060313126468
1983	1.0068758518246275
1984	1.1951044343805457
1985	1.5680364407604805
1986	1.3786860886126284
1987	1.343522125661772
1988	1.661330227669094
1989	1.3848557681332272
1990	1.4119329539923842
1991	1.730464539650514
1992	1.4594422643550036
1993	2.2038027576738863
1994	1.483171153396129
1995	2.194776201795476
1996	2.282729725937921
1997	2.7259251263347153
1998	2.4536833586449878
1999	2.453543070550851
2000	3.2784646431413824
2001	3.155502258967709
2002	2.664968641392092
2003	2.668087449116003
2004	2.726632371167747
2005	3.448115438821981
2006	3.5384695644917135
2007	3.219101190802064
2008	3.60035397456631
2009	3.5009519134782168
2010	3.968638870590939
2011	4.204443560004031
2012	3.416834872786885
2013	4.105713521056535
2014	3.445129873875146
2015	2.9606274172033777
2016	3.3904850223658585
2017	3.230230278320694
2018	2.9761323580510144
2019	3.082246773558922
2020	3.518113391800077