Year	% of total merchandise exports
1960	4.30379746835443
1962	3.5264483627204033
1963	2.3423423423423424
1964	1.7784326926741276
1965	1.8971455256552447
1966	3.135631751407115
1967	2.7502750275027505
1968	3.297164438582819
1969	6.389026986372966
1970	5.634819485016298
1971	7.3055289546390165
1972	6.189931834539989
1973	8.408019262281377
1974	8.360420211736177
1975	9.123427805604702
1976	11.377911891539062
1977	12.61552986995744
1978	9.832068797836412
1979	8.942664837980702
1980	14.93241716378064
1981	15.174982643329557
1982	15.838581278353065
1983	18.114162857894605
1984	16.242662597790197
1985	16.061089413286965
1986	6.948133548841348
1987	17.56044412168405
1988	15.612279239985419
1989	15.896034255510319
1990	1.840580586201188
1991	2.650921839311476
1992	14.431471217188601
1993	6.730319769349697
1994	5.80063625744239
1995	12.672985691582204
1996	11.075663701170807
1997	10.247655593187762
1998	13.05629018048824
1999	12.050930234682458
2000	7.309659213710436
2001	6.553546941765674
2002	7.966302178234676
2003	9.27188222894795
2004	8.473873483403814
2005	7.532160615144841
2006	10.469585525791981
2007	10.150224941205135
2008	13.972032508230944
2009	18.389511030620955
2010	23.050194713028336
2011	24.371814732083273
2012	27.566304092045012
2013	28.37616548940159
2014	32.5799294746072
2015	28.89399642970154
2016	37.918269475204234
2017	34.342735617505625
2018	39.32146869155409
2019	37.252940387838926
2020	38.672861715609294