Year	% of merchandise imports
1966	23.877153858538268
1968	23.298124336784728
1969	18.97404153987421
1970	19.17637956126114
1971	21.880429680005683
1972	21.285000940152806
1973	22.480413648375436
1974	27.77376709252011
1975	23.997579899561806
1976	18.75396202994507
1977	17.913183992312938
1997	23.086791106139117
1998	20.221101470830103
1999	20.449798114990745
2000	17.266944223293866
2001	16.85486486735342
2002	16.432673057930153
2003	17.958904464275445
2004	16.807005177740315
2005	15.15633203624119
2006	13.565227038927132
2007	17.473801940202097
2008	14.337658098710515
2009	15.64218392680287
2010	15.956633316792308
2011	18.47766496426741
2013	18.248103537225475
2014	17.035915577050062
2015	18.78456144585367
2016	19.150251530510808
2017	19.950520901606097
2018	19.257251533436023
2019	20.075244644455456