Year	% of total merchandise exports
1960	4.0759678597516436
1961	3.3971086406794213
1962	4.51980014803849
1963	5.297529538131042
1964	5.123848361274732
1965	4.70871020062247
1966	3.9435081764481454
1967	4.22351353235281
1968	3.0725077102006098
1969	1.95722037827301
1970	2.131017057391691
1971	2.0093968184927937
1972	1.4594730238393976
1973	1.3047976513642277
1974	1.4503380910508055
1975	1.9545939922930498
1976	1.4769123843447287
1977	1.072205557569964
1978	1.1836121657140475
1979	1.114656853321616
1980	1.2259577299660953
1981	1.0694069158942436
1982	1.2895815779439939
1983	1.4545871491029099
1984	1.407811080835604
1985	1.4004652427985855
1986	1.201604223965855
1987	1.0008186574808289
1988	1.2643015395993218
1989	1.111401308225094
1990	1.0091077371207124
1991	0.7740495460022582
1992	0.7083617499413034
1993	0.8681764578263045
1994	0.6756057609521151
1995	0.8316853080763815
1996	0.8100060707093093
1997	0.7717776798684332
1998	0.7065899412509808
1999	0.6680583040071338
2000	0.5974639544024649
2001	0.6600312437587719
2002	0.7699475661913726
2003	0.8692414395295885
2004	1.047546617091995
2005	1.1079963906102788
2006	1.2637344622416802
2007	1.7934187100602912
2008	1.687982647755592
2009	1.9220368810967823
2010	1.8857525303524882
2011	1.8880225184150883
2012	1.6793274821451674
2013	1.6441120247334375
2014	1.5701155627344983
2015	1.6789989624278034
2016	1.7940138268556098
2017	2.028991485756433
2018	2.3983437644810843
2019	2.477850885675636
2020	2.326888319479177