Year	% of total merchandise exports
1960	3.449527959331881
1961	2.1316783594171613
1962	1.162398921832884
1963	2.141423154137854
1964	4.585566563802717
1965	3.66985443067791
1966	4.011355568521992
1967	3.889921040408732
1968	2.3817926101669107
1969	2.198798778752543
1970	2.356698582448611
1971	1.8381319740584312
1972	1.6922493111659855
1973	2.375226994645435
1974	1.1556149500422335
1975	0.7254066362479619
1976	0.5914653407379534
1977	0.7667156803688088
1978	1.0905358525314925
1979	0.6200245155184535
1980	4.829418238610658
1981	1.911553422598199
1982	1.3168209072876234
1983	1.7849805630494955
1984	1.1571999037542282
1985	1.2484554301585613
1986	1.2168445598002502
1987	1.902247387118493
1988	2.433446472164162
1989	2.559512906711127
1990	1.6991607928249066
1991	2.2270196613765676
1992	2.280953665737532
1993	2.480886896462002
1994	2.5649291145901483
1995	3.628065253611549
1996	3.6109819358039683
1997	3.5582169000133974
1998	3.4835850767211136
1999	4.494303326411476
2000	6.440217243025731
2001	8.001226641549726
2002	8.43494568772163
2003	9.100082728042844
2004	8.483766218870224
2005	8.516323284851747
2006	9.051311692574574
2007	9.718107451527173
2008	7.376924742114113
2009	8.506246230084683
2010	8.264873002890335
2011	9.145815018214755
2012	8.977912201574792
2013	11.572690617277537
2014	11.450336260778263
2015	11.077052699510332
2016	11.250513383489542
2017	13.58888803624912
2018	16.75044429186208
2019	17.27854066813493
2020	17.917102976944427