Year	% of total merchandise imports
1964	1.0526315789473684
1965	1.1235955056179776
1966	1.282051282051282
1967	1.3513513513513513
1968	2.631578947368421
1969	1.9257086999022484
1970	1.4925373134328357
1971	1.5151515151515151
1972	1.0526315789473684
1973	1.4173562486738809
1974	1.4504932407745708
1975	0.972186998055626
1976	0.4018369690011481
1977	0.2996471895993427
1978	1.0038152387302293
1979	0.25078457744900245
1980	0.1821551834334654
1981	0.0834488205403311
1982	0.13661751115039983
1983	0.16727923933759836
1984	0.13661751116357965
1985	0.10652257815515244
1986	0.12274959083469722
1987	0.12274959083858371
1988	0.12274959083144908
1989	0.12274959082161332
1990	0.23737324015448308
1991	0.005003033830158688
1995	1.172061772817893
1996	1.2978594915996626
1997	0.29599084898139855
1998	0.5338255020669099
1999	1.0737958284708446
2000	0.033796558566070695
2001	0.07786109414254176
2002	0.1664773831765528
2003	0.1694365228131061
2004	0.2588822795780691
2005	0.2529608675421158
2006	0.031794000860646494
2007	0.03862506749783649
2008	0.2551973119854133
2009	0.2718952967707014
2010	0.06424715883341739
2011	0.1368362600256661
2012	0.33603675253400384
2013	0.39399282731631613
2014	0.4536082029960927
2015	0.25418435910410414
2016	0.3980269927930765
2017	0.2989675237960689
2018	0.8399346957743948
2019	1.12054394603017
2020	0.5685895501544688