Year	% of total merchandise exports
1960	2.209944751381215
1961	1.5566741237882178
1962	1.5421303656597773
1963	1.8259712170368523
1964	4.5559214598757025
1965	3.2280813503799086
1966	2.6014919218802715
1967	2.914314494629583
1968	3.2775504696027675
1969	0.9387960096550357
1970	0.9371973501898251
1971	0.9876952173863803
1972	1.1055839257481113
1973	0.6029631085718192
1974	0.4334138622539407
1975	0.1362754025767976
1976	0.2710563839487434
1977	0.25457822437699507
1978	0.4561183768439241
1979	0.369488483326821
1980	0.3843954952836351
1981	4.173039562364607
1982	3.258936691977362
1983	2.968719312541354
1984	2.6037196279704746
1985	2.8627989057368746
1986	2.163874997573435
1987	2.1461672221578234
1988	2.489956339387685
1989	1.7537048209637685
1990	2.4009000289906886
1991	2.4232634522197603
1992	2.0402186293044475
1993	2.0636966069060882
1994	2.6025267644683794
1995	2.7682888744395324
1996	2.1756771045490146
1997	2.5649759764176836
1998	2.645477449911582
1999	3.019853656897744
2000	2.432959196196688
2001	2.3279548379265123
2002	2.642601855230857
2003	2.2277173844958402
2004	2.3435304324491195
2005	2.9165953550729697
2006	6.974306444813216
2007	7.478694133200466
2008	7.475894583075725
2009	8.251884793794185
2010	7.042234671174713
2011	10.035789142459873
2012	9.232793589362522
2013	9.623166714179046
2014	9.984212788838862
2015	10.13592845523623
2016	10.690587118562087
2017	11.77562509532549
2018	13.64564984746136
2019	11.153093806071642
2020	10.790331975530009