Year	% of total merchandise exports
1960	11.563404748118124
1961	9.76846227132481
1962	8.714462813355409
1963	9.17438343778256
1964	9.281919232760885
1965	9.329391609022169
1966	10.227756428318775
1967	12.814124612199965
1968	13.131780078895464
1969	13.206375971057058
1970	9.014898806556412
1971	9.32172023856093
1972	9.132307312329232
1973	9.259924249374206
1974	11.590363705046432
1975	14.648971717532497
1976	14.053834326380349
1977	13.799187494622986
1978	13.580547499868253
1979	15.388685232208003
1980	17.545335603044414
1981	24.396967729917936
1982	26.46080963825777
1983	24.213475952744968
1984	21.98924330800013
1985	22.450713228631326
1986	20.916489954110286
1987	18.769090606019763
1988	20.103364070057417
1989	16.99122109108405
1990	14.509027203250973
1991	12.599819958625941
1992	16.151003896571904
1993	16.263120698685725
1994	11.826817873535848
1995	12.156239674483382
1996	13.097563523232989
1997	12.969942353622557
1998	11.965181204346317
1999	12.223178022682967
2000	11.539195850257645
2001	12.127248434991238
2002	12.863888892462311
2003	13.000185949502438
2004	13.354659354196988
2005	13.082836911369004
2006	12.783201192251884
2007	13.404498564948128
2008	13.614561251631315
2009	15.817870025040333
2010	15.940714695877217
2011	15.956815221812299
2012	17.981201929799422
2013	17.817931973948006
2014	17.891423334937947
2015	18.17698088085092
2016	18.98829825921984
2017	18.86105998208748
2018	18.993964992681107
2019	19.35525804023322
2020	19.833585369337204