Year	% of total merchandise exports
1960	2.221900060278195
1961	2.579418951941352
1962	4.375786383335663
1963	4.121278611925491
1964	3.725400226209661
1965	4.460136286972255
1966	4.2704369146811585
1967	4.280121268094846
1968	4.6553586025106215
1969	4.122721544251328
1970	3.886523621938066
1971	5.25353005611395
1972	4.930515205377519
1973	4.815521346114758
1974	3.562015448135172
1975	4.667553557023605
1976	3.6172517070589794
1977	4.011185758082387
1978	4.420522315001609
1979	3.299426295310494
1980	7.416836791097831
1981	4.809057563297701
1982	5.296794047096409
1983	5.709060841492255
1984	5.858469956669931
1985	5.438845175145646
1986	7.010250405904402
1987	7.818852730627619
1988	8.122731269316578
1989	8.562365932149016
1990	8.478469901917302
1991	10.100210636818623
1992	9.816541298169977
1993	9.52600721450063
1994	8.866026290676551
1995	9.428133102968914
1996	8.92951210222885
1997	9.20141081175184
1998	11.280808344036005
1999	10.750934294707289
2000	9.841962724168765
2001	10.296422430796632
2002	11.757653151601714
2003	10.905948565268158
2004	11.217793233496145
2005	11.583741417983122
2006	12.031388021911939
2007	12.804319366763758
2008	11.080528915089086
2009	15.668837806533123
2010	13.858520437173013
2011	14.729582090896637
2012	14.687242771097047
2013	15.394035878081471
2014	16.08977085283336
2015	16.842664568875865
2016	18.019302240465727
2017	15.827524178625527
2018	13.871657356138503
2019	14.029551052988687
2020	16.628577550200806