Year	% of total merchandise exports
1960	4.640000954063471
1961	4.8215931258152915
1962	5.7443410836347955
1963	6.134674024017092
1964	6.376134732819308
1965	6.895921243354103
1966	6.267325433748583
1967	6.781689166224961
1968	7.042726090345138
1969	8.758881878036673
1970	9.191430776389371
1971	8.980150531180799
1972	12.692143172266432
1973	13.300234909832175
1974	13.810580923193925
1975	10.759956393062128
1976	8.676965164758325
1977	8.12639510751742
1978	8.898615772954093
1979	8.504826044943895
1980	9.509945899375753
1981	11.064953265675468
1982	11.588230117151674
1983	10.88288569626316
1984	9.383588710819476
1985	10.06180301662891
1986	9.81411613228702
1987	10.864615245703783
1988	9.05109674668188
1989	10.067276161375116
1990	11.042347857722213
1991	11.891186275245056
1992	12.608880947347693
1993	12.880826041732938
1994	13.274082785749657
1995	12.39317858500095
1996	13.039778816242768
1997	13.487252960695143
1998	14.496142976649425
1999	13.691971473960374
2000	22.25190568890725
2001	22.036566790154772
2002	22.045505690544253
2003	22.310117898168507
2004	23.182337901563844
2005	23.71378281129919
2006	23.719416110606815
2007	24.352934470868075
2008	24.614697166025945
2009	26.64990185345728
2010	25.74406243452758
2011	28.26301562963589
2012	30.403499590655734
2013	31.251541154767164
2014	30.057496835523555
2015	27.915551259338567
2016	27.14753331779
2017	24.27857882297316
2018	23.224223956643865
2019	23.52375376848936
2020	23.25026912636679