Year	% of total merchandise imports
1960	81.63120980827703
1961	81.49848784150352
1962	80.77184693276328
1963	80.17356810447153
1964	77.77290150750022
1965	77.2452534122252
1966	78.67070230432917
1967	79.40039138652637
1968	78.89570912503308
1969	77.93741658201608
1970	78.58465461224938
1971	79.41651630660579
1972	78.7857215312518
1973	78.46926856250566
1974	77.82283632608534
1975	79.89121822442097
1976	80.03938087677398
1977	79.17952720145543
1978	79.2154380258473
1979	77.78244349967649
1980	76.31502610595695
1981	78.63963681174634
1982	77.66685138431247
1983	76.87086815561656
1984	75.3033196090298
1985	75.27887733915836
1986	77.73792811791799
1987	76.36526784556166
1988	76.84255890125225
1989	76.31751348053638
1990	77.82116171766627
1991	80.08359023799201
1992	79.37022076006917
1993	79.58636453841741
1994	77.0227629842493
1995	74.52434289037285
1996	74.03130114939275
1997	75.70262069998005
1998	76.14935366063466
1999	76.40187413134963
2000	73.35324380100488
2001	72.3323008555059
2002	71.12035497693914
2003	68.84208084654638
2004	67.06144715868363
2005	65.25403036297196
2006	64.43711336214909
2007	62.589754244711195
2008	61.04228298049765
2009	60.76006210529585
2010	60.2649732858228
2011	58.80110140436473
2012	58.50764078499516
2013	58.68774405024718
2014	58.13849685595706
2015	57.87336621506016
2016	57.73515191638198
2017	57.25753407010485
2018	56.981804320028274
2019	56.1555523331608
2020	55.705380955877914