Year	% of total merchandise exports
1960	2.2518626424485215
1961	2.3029667587164226
1962	2.5203836069106713
1963	2.211528548671919
1964	2.3239194150852227
1965	1.9965396284976358
1966	2.1583285697670678
1967	1.5933346167028986
1968	1.6280456314633727
1969	1.7895349237758786
1970	1.6305526002461337
1971	1.9236668217121624
1972	1.7934608268934564
1973	1.9361530947906231
1974	2.981068829132065
1975	4.583348309689941
1976	3.8832151123437546
1977	3.8573985293493007
1978	3.853934552840068
1979	2.3156851656580106
1980	2.068207875662414
1981	2.487473242783452
1982	2.826020799301591
1983	2.509430623535219
1984	2.2647598239807882
1985	1.8101791474378115
1986	1.550058310696661
1987	1.4587509210780452
1988	1.4689085782580475
1989	1.4012858991646153
1990	1.2274549454233408
1991	1.135928136363004
1992	1.2171049054596514
1993	1.1596903140637733
1994	1.0440813257942023
1995	0.9276507164567294
1996	0.8511410866578745
1997	0.8886567736569423
1998	0.7522151530210548
1999	0.6904703638984379
2000	0.7056478266090738
2001	0.7613166624314895
2002	0.7290280738860475
2003	0.632146159752515
2004	0.7245236091372519
2005	0.7468779216894216
2006	0.842330484030491
2007	0.9973121475518223
2008	1.0906678668957004
2009	1.2654081134824526
2010	1.147630979888534
2011	1.0426281698117168
2012	0.909586894779543
2013	0.9449435415223445
2014	0.9774631777595904
2015	0.8230759051379047
2016	0.7640199226266184
2017	0.7246639782871181
2018	0.7909363070796179
2019	0.8259386115576391
2020	0.7661359462477483