Year	% of total merchandise exports
1960	18.847352024922117
1961	16.468842729970326
1962	18.045112781954884
1963	17.27053140096618
1964	20.041972717733472
1965	18.25334382376082
1966	15.468856947296372
1967	15.755627009646304
1968	18.430815993563236
1969	18.382878956385827
1970	16.007529601786203
1971	9.215849977522318
1972	11.096488119944523
1973	12.06050168596744
1974	23.02213451836321
1975	19.091325079082967
1976	14.319018280674934
1977	11.912102058317355
1978	10.238259582359643
1979	10.936401607260573
1980	12.238307955486512
1981	11.589287238935665
1982	10.646257837433224
1983	10.049030427482613
1984	6.530724926913903
1985	10.049030426731504
1986	3.837614474849676
1987	4.056103108415466
1988	4.576877234803337
1989	3.830787309048179
1990	3.778926637124569
1991	4.423644056930376
1992	6.658842255609534
1993	12.9264330471107
1994	14.929295482294267
1995	15.292574987706933
1996	16.60357359176257
1997	15.362819626814098
1998	15.30432513536434
1999	7.399778835668315
2000	24.05354616129579
2001	27.197379083270253
2002	25.368152511439202
2003	28.10159242422901
2004	29.76390125617915
2005	25.894267041073498
2006	28.445864161717154
2007	30.784636931571875
2008	32.84358781057082
2009	28.77416985028514
2010	28.22025098736501
2011	26.265663324582594
2012	24.038021355997945
2013	29.711384927227115
2014	30.88212067724631
2015	29.62185290089056
2016	30.202770006665205
2017	24.881692377166196
2018	26.989344127990712
2019	26.551542066101614
2020	28.808961418469792