Year	% of total merchandise exports
1960	69.71491712707181
1961	71.31804623415363
1962	71.44144144144144
1963	70.37684052907413
1964	69.00735385148687
1965	70.98594112561992
1966	74.52487161225025
1967	75.84075282629773
1968	76.88352376672756
1969	76.47282127601677
1970	76.13511946422393
1971	75.73684299935447
1972	75.05133894275646
1973	78.93208011589199
1974	79.57995523294677
1975	78.76807546226505
1976	84.44372292615351
1977	85.75766115032425
1978	85.9432983328686
1979	90.52035673804588
1980	89.28799351989757
1981	77.35275201253047
1982	77.55790135760904
1983	75.9820417475806
1984	75.1184609484761
1985	76.16439383452067
1986	74.86469921788229
1987	73.69673481454585
1988	69.64880006320722
1989	71.46664045580351
1990	74.12988704365311
1991	76.51054238617185
1992	75.19838682958179
1993	74.49814846499805
1994	77.94094959593288
1995	75.01478467463433
1996	70.73728894058658
1997	73.34101764728499
1998	76.72186760556161
1999	78.28644013516552
2000	77.6455861056844
2001	76.15420270054437
2002	75.37708773822882
2003	75.45866752926563
2004	74.20132925028541
2005	74.2111246734249
2006	71.07510661215836
2007	67.91928666972329
2008	66.41194909147077
2009	61.63853940332231
2010	65.62972131648172
2011	61.43981883096915
2012	63.910493844318935
2013	61.854480380548104
2014	58.568577308823436
2015	58.52717120917427
2016	61.50155804017565
2017	59.22986434012216
2018	56.273205662596716
2019	56.95552292238138
2020	53.481278121779184