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	4.752926737474587
1982	5.0991505665158225
1983	4.70146023316326
1984	4.629754311023295
1985	5.189154937508511
1986	4.570217074719706
1987	5.140481335365824
1988	5.2840207606777945
1989	5.43017323846188
1990	5.64555159286672
1991	5.771963778832761
1992	6.035337679619591
1993	6.550736121896046
1994	7.187638278474359
1995	7.892960554467086
1996	8.254019236068716
1997	8.391018313834877
1998	7.876150146302355
1999	8.245702012566975
2000	8.982788050471461
2001	9.21591621230947
2002	9.748032045716043
2003	10.238729494123142
2004	10.402713655015335
2005	10.441948126711036
2006	10.242769076808237
2007	10.533548434266407
2008	11.012151687679246
2009	11.99105150399073
2010	12.58348968717932
2011	13.200569541884327
2012	13.797233987003429
2013	14.532888417723766
2014	14.4749295409162
2015	14.580159308578367
2016	15.095171412102307
2017	16.323652532717333
2018	16.823818071185062
2019	17.781929872884387
2020	17.844166251791428