Year	% of merchandise imports
1964	28.40641895186906
1970	31.681106114364404
1971	25.868815524463017
1972	21.103296781848112
1973	20.683895229764193
1974	28.562532186263528
1975	24.20867334426971
1976	27.676727623995635
1977	26.480852441074394
1978	26.867280281995676
1979	25.028574333117014
1980	25.875978969946463
1995	36.365178247292995
1996	37.32661178084498
1997	37.745101209601096
1998	43.62588647959858
1999	36.54943586113651
2000	34.49530317990409
2001	40.9989776196766
2002	37.10173497588586
2003	37.59971894159481
2004	40.84190870924079
2005	37.728918714948136
2006	31.18997491090508
2007	30.867839437222354
2008	33.622682242808324
2009	39.01273424567117
2010	45.45472810108041
2011	32.840625730977905
2012	33.184180708524565
2013	37.282430945500224
2014	41.02321097237687
2015	37.34248375636139
2016	43.033803801892006
2017	33.035491419772775
2018	32.23594193274105
2019	33.160555615646146
2020	28.813923732933794
2021	23.060866924529456