Year	% of merchandise imports
1966	25.77836513460749
1968	19.298546932622724
1969	15.71472902851769
1970	12.73731959732555
1971	15.630139322353942
1973	16.092758140949435
1974	19.81681157322294
1975	21.70112919375177
1976	17.7376995741887
1977	17.182046256369873
1978	16.61248135524706
1979	18.518010045361446
1980	20.955038099318195
1981	20.74088530105564
1982	20.689341161876445
1983	21.2163414881976
1984	19.20045742177164
1985	25.42061722811611
1986	21.94844240000575
1987	27.351477947048743
1992	28.507904449687913
1993	27.358635817664933
1994	33.036337919477944
1995	29.454083351488297
1996	31.25619232434263
1997	31.824345226856554
1998	29.87474464681854
1999	27.42322675271766
2000	28.1684762632487
2001	26.136151761611604
2002	25.08334733315315
2003	22.4214520152419
2004	21.91339947842444
2005	19.32753540887532
2006	19.205724479411014
2007	19.83432881795097
2008	21.425011117201908
2009	16.33883688963638
2010	16.301001498403615
2011	22.792107513434683
2012	19.849292236183818
2013	19.06224232120722
2014	20.103368494513585
2015	19.31501455306045
2016	19.028166120450933
2017	20.23004145749174