Year	% of total merchandise exports
1960	8.446679015612595
1961	11.180853648659593
1962	10.565777759883328
1963	9.641379119310503
1964	10.264048782396577
1965	7.833985321718617
1966	7.943402280499925
1967	7.278569149756646
1968	7.025181064375401
1969	7.111605062168948
1970	5.608591152026301
1971	5.638183940411297
1972	5.2996279155203965
1973	4.66438046389372
1974	3.860053848255622
1975	4.00501488381366
1976	4.426382503063347
1977	5.1004602330742665
1978	4.800447881852113
1979	4.825381416809541
1980	5.035448527074546
1981	5.057172431877869
1982	5.470630276603183
1983	5.012735816994951
1984	4.930521974778715
1985	5.469133265626131
1986	4.888603994053915
1987	5.361489019375754
1988	5.477169650520584
1989	5.549354175135334
1990	5.753730830040253
1991	5.824722454276389
1992	6.097257255154295
1993	6.659085653589086
1994	7.245725603510264
1995	7.906895004069716
1996	8.261613862208161
1997	8.408858058618613
1998	7.876121214063597
1999	8.244334457331002
2000	8.974197696340434
2001	9.231304392684494
2002	9.78543441782707
2003	10.282749238765382
2004	10.455621565756527
2005	10.48141604323118
2006	10.267173475750505
2007	10.551446669838736
2008	11.038323326706292
2009	12.025700610942526
2010	12.622631484281724
2011	13.269723590610404
2012	13.866757807697613
2013	14.607387061978269
2014	14.544366308626394
2015	14.64224206696664
2016	15.1680012650117
2017	16.364270170140088
2018	16.82735627660242
2019	17.785082047330395
2020	17.842862246615827