Year	% of total merchandise exports
1960	33.865942811314355
1961	32.62787665625663
1962	30.462749882163752
1963	31.44030932817786
1964	32.006214798990094
1965	31.0632383599722
1966	29.40143655227454
1967	30.71303331385155
1968	30.6836902800659
1969	29.766955591485427
1970	29.303142854136638
1971	25.991564446852145
1972	18.885891745244518
1973	18.110270576877976
1974	17.114570465166377
1975	15.554455036936158
1976	11.969532100108813
1977	12.86462081406926
1978	11.992622977935095
1979	12.514230189850856
1980	13.699111761077104
1981	15.589853030190653
1982	12.336162402296482
1983	12.051698900074612
1984	11.43972087926875
1985	10.547614236388716
1986	7.488706311621554
1987	5.9750382225225485
1988	5.565521530184944
1989	5.839880731343458
1990	5.972491141927754
1991	6.274237854941048
1992	8.27533831794474
1993	7.2690203918467535
1994	6.752645227523008
1995	6.546977312688841
1996	7.211512546353142
1997	5.756506540211728
1998	6.6077021729366345
1999	5.356331713146102
2000	6.173234435423014
2001	6.8941718964898495
2002	7.1051347367474955
2003	7.301063463708857
2004	8.207074259452439
2005	8.352489727050884
2006	9.446888767157686
2007	11.32714315247753
2008	14.108644994262844
2009	15.50771296641612
2010	14.811562489188054
2011	15.814079143941061
2012	17.867176792722876
2013	18.857433203307902
2014	18.283029959930076
2015	15.724106563130768
2016	13.8846170631064
2017	14.63097689974704
2018	12.85832494970101
2019	11.859735550792347
2020	11.618821960915271