Year	% of total merchandise exports
1960	0.1825059634304651
1961	0.17201202823892028
1962	0.3240580892828271
1963	0.3060563475351474
1964	0.31113939911918226
1965	0.27889433623482845
1966	0.37567488668505566
1967	0.4686289409313075
1968	0.48591044892798296
1969	0.47286937526920675
1970	0.5863406046325805
1971	0.7000199824696582
1972	0.673264740771653
1973	0.5799576168924123
1974	0.521368966864492
1975	0.7890256660509914
1976	0.7869568071257608
1977	0.7158184751239842
1978	0.6921123327404539
1979	0.6218014515633741
1980	0.762652026692994
1981	1.3572753094857861
1982	1.3267075178999175
1983	1.4345631850143352
1984	1.481164497960371
1985	1.5349817683392462
1986	1.0609712333694983
1987	1.3627164450876554
1988	1.3100605550947197
1989	1.1378301639228623
1990	0.9925160508840567
1991	0.5625752216294214
1992	2.6938615324438144
1993	3.0942669279806023
1994	5.291797535355582
1995	5.827500897077889
1996	5.631346856596164
1997	5.656922385182906
1998	4.959788289574066
1999	3.7985755676308353
2000	4.0313438807645205
2001	3.828490739678524
2002	4.239667795844271
2003	4.809010246249756
2004	4.816814292748198
2005	5.337006888283555
2006	5.635020316455662
2007	6.772350341810246
2008	7.1911564757163635
2009	5.129395848891653
2010	5.32005172843307
2011	5.800143752209444
2012	6.4268030987244265
2013	6.354640663685848
2014	5.966638738757428
2015	4.998882249335261
2016	4.993518607110253
2017	5.375938168916356
2018	5.262691382030944
2019	5.4883787824823616
2020	5.504054021561644