Year	% of total merchandise exports
1960	23.642674954925607
1961	23.167143212222598
1962	21.75373589107902
1963	20.464393966798717
1964	19.28138770577572
1965	17.70404248438278
1966	17.59836828185923
1967	18.896281666952156
1968	18.946429394392105
1969	16.36268547988736
1970	16.49558027767425
1971	7.631414874558957
1972	18.38476504253234
1973	15.915939458173762
1974	16.972052923703238
1975	19.915888465290145
1976	19.94961260586517
1977	18.886751286255016
1978	15.472037645554773
1979	16.898507262101237
1980	20.365988401416473
1981	19.005611285057817
1982	15.084688883244546
1983	14.083281239236866
1984	15.870229356272572
1985	9.993974436199931
1986	15.343434145692619
1987	12.058541332888167
1988	13.374000386531026
1989	13.807912665075234
1990	12.697399160129317
1991	14.684305027250785
1992	12.068397006335053
1993	11.612414167784195
1994	14.90357158451687
1995	14.169362901507048
1996	21.749303522590154
1997	19.217091702406243
1998	17.106458696280562
1999	13.5986849071471
2000	12.094629383061084
2001	12.444320812586918
2002	11.412507847049696
2003	10.185204737384892
2004	12.53322811690818
2005	13.128705253092823
2006	11.423691422637624
2007	10.17786662111538
2008	8.694353979075363
2009	9.085698484504237
2010	7.884798746331652
2011	8.426336875186145
2012	9.275507962672624
2013	9.66164568687381
2014	10.624239347179
2015	8.600502738233693
2016	7.888993727622576
2017	7.145135679634305
2018	6.460712548480966
2019	3.847940915629539
2020	2.3516909234894627