Year	% of total merchandise exports
1960	2.3223308174407498
1961	2.8597053701912647
1962	2.202057023219724
1963	2.143302424467301
1964	3.2485949686376108
1965	3.7847392027529154
1966	3.7826544934870463
1967	2.997886964700638
1968	2.9381090651179873
1969	2.6179774619944225
1970	2.704197878473392
1971	3.3210523566463035
1972	3.567447763425577
1973	4.860770631556894
1974	6.692867811569079
1975	6.359919828767147
1976	4.581519698153566
1977	6.074750994155274
1978	5.7594469504020145
1979	5.219554065190417
1980	5.997683144878223
1981	10.964280262590663
1982	12.417695806354581
1983	12.21837480190096
1984	11.566244072122837
1985	11.293091243201854
1986	9.456031238145837
1987	9.585638969677428
1988	9.624252660435257
1989	7.8906009397546235
1990	7.439432902728611
1991	5.528094791243005
1992	7.274919037506483
1993	7.685023386527753
1994	6.58617239276255
1995	7.063501304758748
1996	7.091113806295881
1997	7.0169536726356965
1998	6.875795537840852
1999	6.740538703626086
2000	6.57058898437943
2001	7.162673599272234
2002	7.9874625409961055
2003	8.955123648593652
2004	9.490812282253687
2005	10.054290672771725
2006	11.010192971283145
2007	12.496378085288836
2008	13.757027973087835
2009	14.869319584318921
2010	15.4216505076601
2011	16.334227847731373
2012	16.753705008386767
2013	17.102683619426216
2014	17.639027711101917
2015	17.287049307220695
2016	17.70285526793976
2017	18.447722107895085
2018	18.944444726443876
2019	19.344903356916603
2020	18.88482512126501