Year	% of total merchandise exports
1960	4.025467283331122
1961	4.2033904188235525
1962	3.8047371083703334
1963	3.225789024429774
1964	3.0936676564810544
1965	2.7396528590840337
1966	3.045697997351902
1967	2.9186531973227745
1968	3.0171906014747107
1969	2.8958535363801374
1970	2.7364067810840202
1971	2.6915572553151357
1972	2.5474808423436506
1973	2.351550225035874
1974	2.9013187670886897
1975	2.7398814395095337
1976	2.1827535957873705
1977	2.0448241500325435
1978	2.08156165783413
1979	2.2806834510450775
1980	2.349356751935809
1981	2.504739725516221
1982	1.941038814306165
1983	1.7093756997709424
1984	1.6357336810676681
1985	1.491919828630735
1986	1.5060217043109079
1987	1.3836760741159728
1988	1.2011481608381398
1989	1.2673970877144098
1990	1.2408123988793105
1991	1.4221322540561725
1992	1.5745103629307293
1993	1.8674052820838423
1994	2.021626584020006
1995	1.9524178130887817
1996	1.998961845528162
1997	2.1179749227186564
1998	2.2148854043197908
1999	1.9138345772748144
2000	1.9053749338564785
2001	1.951020936491082
2002	1.6844871495763767
2003	1.4931947966874546
2004	1.4671761153925678
2005	1.5860256359068414
2006	1.6284956856741246
2007	1.7009432909038174
2008	1.8394788883378823
2009	1.762318483779033
2010	2.0801633583663164
2011	2.1288760397072584
2012	2.3188349673236033
2013	2.3702159525929125
2014	2.253313178307699
2015	2.272065490169395
2016	2.142043092250374
2017	2.1857786793044345
2018	2.1486723847038163
2019	2.08506849153016
2020	1.8690503823290099