Year	% of total merchandise imports
1960	6.567629739979604
1961	5.997571721234848
1962	6.050103897689746
1963	6.002116516253984
1964	5.660221730704312
1965	5.334866808859535
1966	5.195860105265162
1967	4.885262893704958
1968	4.57752816221694
1969	4.427177299179473
1970	4.295031201482525
1971	3.8737075748647145
1972	3.9121366516567253
1973	3.9257696167787195
1974	3.6750317369956527
1975	3.554027068598421
1976	3.438535758644328
1977	3.9541442543995573
1978	3.797478007062244
1979	3.8719621417860144
1980	3.87717311843099
1981	4.252021252191108
1982	4.499844247363145
1983	4.790983167249951
1984	4.970924714658102
1985	4.833691589306734
1986	4.06745886809611
1987	3.7987915582301484
1988	3.913561082075175
1989	3.942792303801204
1990	3.7062709295743637
1991	3.712017477639959
1992	3.6979006882170253
1993	3.972463140245028
1994	4.204533817126247
1995	4.191100210513253
1996	4.383549167855228
1997	4.6193427781642225
1998	4.764539668547973
1999	4.884758054280383
2000	5.147009085015012
2001	5.256010997397878
2002	5.27120530057431
2003	4.960056976179452
2004	4.860877294548492
2005	4.9056885277996525
2006	4.931541187793502
2007	4.8061562435152005
2008	4.752588675244194
2009	4.925357725964847
2010	5.376626105938111
2011	5.518031531543528
2012	5.781954083498785
2013	5.6213484145188355
2014	5.557128001590417
2015	5.746388310888365
2016	5.780807739262036
2017	5.692238578402747
2018	5.639832844644569
2019	5.843601779373349
2020	5.681001116536834