Year	% of total merchandise exports
1960	3.8277511961722492
1961	2.9282576866764276
1962	2.2123893805309733
1963	3.6585365853658534
1964	2.547770700636943
1965	1.8791946308724932
1966	2.0393811533052038
1967	1.517150395778364
1968	2.605459057071951
1969	2.2885471851436585
1970	2.4595397385004025
1971	2.406767162376621
1972	2.4751542461283123
1973	4.109268615681364
1974	5.16386347910961
1975	3.224396341934736
1976	4.244967093063805
1977	6.45392298511213
1978	3.6881255176364043
1979	3.491635395743389
1980	6.360226907742056
1981	8.454294071172821
1982	8.929372167025939
1983	8.912396570863535
1984	5.111845048894223
1985	15.122274494953173
1986	35.39803306202663
1987	34.90649955326224
1988	19.41206560167309
1989	18.851541940465502
1990	20.442617347139414
1991	16.30416827267221
1992	12.64829397501804
1993	5.672969966629588
1994	6.5750149432157805
1995	7.210300429184549
1996	8.962264150943396
1997	5.843592855904283
1998	6.263084438241452
1999	5.575935436537051
2000	5.647957085606931
2001	10.232438775295089
2002	3.9276797062641076
2003	4.876042307484642
2004	1.413185346084267
2005	2.0184751059037036
2006	1.1550801077390986
2007	1.4587993069126677
2008	2.76346287317086
2009	9.373584448279427
2010	13.597072733429483
2011	13.6168748764714
2012	17.237881191685496
2013	16.704450393983496
2014	7.891808315552426
2015	6.24325436838606
2016	9.747682796397264
2017	11.709476076602893
2018	5.458018840205133
2019	5.354763570338288
2020	3.892976777786994