Year	% of total merchandise imports
1960	92.48353043892372
1961	92.57866613892737
1964	87.74607703281026
1966	91.51268399624179
1967	83.09992132179387
1968	86.69639539204756
1969	82.95283113748366
1970	80.91252917035487
1971	82.65287740329501
1972	83.34306430588747
1973	81.2661477241574
1974	83.29400794043262
1975	88.49444381637662
1976	86.9744073911724
1977	84.625090914762
1978	83.5830266668992
1979	84.227356845757
1980	83.72592547694452
1981	83.67628237557891
1982	81.95022099375481
1983	82.00064836182823
1984	81.12424725974033
1985	83.88262759129339
1986	83.9124540667767
1987	78.14554113943373
1988	80.39113922676677
1989	79.03425584753818
1990	84.54440796389676
1991	84.02290374196664
1992	85.19431781401869
1993	86.10998303201637
1994	82.39550215513547
1995	82.64937599646329
1996	81.40302439758325
1997	83.0305502648663
1998	83.21949868234154
1999	81.87928632245931
2000	82.3456601991204
2001	81.56479792251463
2002	78.6608700716602
2003	74.45559444199525
2004	73.53945950944764
2005	71.75815942352801
2006	72.00023292956851
2007	72.19497403102633
2008	69.56239308197361
2009	67.53870097492577
2010	69.40149950026002
2011	67.86791572680482
2012	65.37728521335082
2013	65.99822797653313
2014	66.3270374133771
2015	64.3251993692324
2016	59.971170320123754
2017	41.01925679365682
2018	39.472836981786756
2019	40.604870207811636
2020	40.604870207292876