Year	% of total merchandise exports
1960	2.2978412001463595
1961	2.0188819539893195
1962	1.930771349329232
1963	1.8982124618633351
1964	1.4993895342610508
1965	1.3799232470677218
1966	1.6295636725454632
1967	1.5558576026856281
1968	1.126348563781584
1969	1.322170817521348
1970	1.4681626446088052
1971	1.9132928648357164
1972	1.6777856439911638
1973	1.72060261061239
1974	1.9023851774118472
1975	2.723139278691236
1976	1.799284277315363
1977	1.8728926071126468
1978	2.1041788006431386
1979	1.544330060557639
1980	2.254310039365335
1981	3.0172007299635375
1982	3.6776751030534025
1983	2.611551635605499
1984	2.321160491007247
1985	1.7025659612139945
1986	1.6035405275268324
1987	1.8175922039267816
1988	1.4094305775410405
1989	1.3330785568778247
1990	1.443565948942586
1991	1.3320289590556345
1992	2.79489066618452
1993	2.351062331807883
1994	2.480277681147456
1995	2.502566091608534
1996	3.0004129397064934
1997	2.7507595917233285
1998	3.0294701673103512
1999	2.937586909991068
2000	4.156403543135397
2001	3.8314961472302476
2002	4.123099258873468
2003	3.4270789302665605
2004	2.7890921696280286
2005	3.172524875660722
2006	4.011558040258251
2007	3.5880463665036806
2008	3.5562203221381745
2009	3.8319474849273014
2010	3.7806197865950137
2011	3.521651705247169
2012	4.391010225484216
2013	4.368729528346353
2014	4.88265811371606
2015	5.843837834235573
2016	6.751720289315297
2017	7.0948108923734114
2018	6.4994819603775165
2019	8.962375974708593
2020	10.077473659531702