Year	% of total merchandise exports
1960	21.065622541528388
1961	20.27939985434952
1962	18.79459210407937
1963	18.356335944096962
1964	18.073889365440667
1965	17.597852724076425
1966	17.559718305865644
1967	17.244590425005736
1968	16.510672219097014
1969	15.577052306752858
1970	15.110714371924997
1971	15.026855422070117
1972	14.009370256359857
1973	14.205437359428096
1974	16.592373940858664
1975	18.741949461277034
1976	16.23042035044447
1977	16.063689054843096
1978	16.183677134679115
1979	15.06665210157904
1980	16.76806756184957
1981	18.197015355940838
1982	17.27531798638357
1983	16.05822070575593
1984	15.265814804752237
1985	15.01168255466162
1986	13.110465549751234
1987	12.255656460659026
1988	12.452001802576092
1989	12.522114820298214
1990	12.52085645794016
1991	13.43448923652871
1992	14.805196907184554
1993	17.24971871359687
1994	17.3020165133264
1995	17.352395551423463
1996	18.06152346791198
1997	18.236848400119467
1998	16.938302055034278
1999	16.02767593528221
2000	17.64466896202918
2001	17.904293025995898
2002	18.202076056953924
2003	19.010416176511423
2004	19.891142102836927
2005	20.81179145712037
2006	21.64631886090592
2007	22.389680065740766
2008	23.71739212837001
2009	24.631417227683055
2010	26.919375242384902
2011	27.38905073832733
2012	28.42861758395764
2013	28.64951172555771
2014	28.246164418086284
2015	27.93616060939997
2016	27.280796256673217
2017	28.399928446737633
2018	28.172048538996926
2019	27.949920628488268
2020	27.78044517103379