Year	% of merchandise exports
1963	63.53770839953823
1964	65.43278133374983
1972	63.409601894487025
1973	62.334964407849704
1974	62.82118929840572
1975	54.210570078369535
1976	63.33649039529144
1983	32.267131278222685
1984	30.76824208970393
2000	9.859355550015742
2002	7.458387781092391
2014	9.50463387003678
2015	10.468379697705558
2016	20.20921698141539
2017	3.319038986878437
2018	25.075595898731862