Year	% of total merchandise exports
1960	22.34251446160378
1962	9.038117007475135
1963	7.100074029207888
1968	44.03062507860647
1969	41.7466825945178
1970	35.44106116887958
1971	36.37703173980076
1972	32.355263097851136
1973	27.320907130966347
1974	26.22601352393421
1975	25.987970364124834
1976	21.508197512323033
1977	21.132693120734434
1978	21.847823418203248
1979	23.391559379030934
1980	24.236529418946688
1981	23.94544351224826
1982	25.851423086042974
1983	26.32693025840005
1984	24.161185827504134
1985	23.553701919749333
1986	22.83359106012406
1987	23.18830662221336
1988	23.97068811511311
1989	24.076785220957373
1990	23.31225531504804
1991	24.592627031816725
1992	23.59367958481307
1993	26.905247336166187
1994	31.42265519432479
1995	31.70893299604464
1996	30.851547611500024
1997	30.168434824394634
1998	27.288497682693897
1999	29.076210252946304
2000	31.17874863813511
2001	31.342668426280106
2002	32.62672601841574
2003	38.75523685256102
2004	39.40566413362388
2005	40.10795490949487
2006	40.697905698160625
2007	41.55026162445608
2008	41.4363895725046
2009	40.05359972898525
2010	40.73857679840596
2011	41.706178185519754
2012	42.71814059713805
2013	43.07645690523154
2014	43.738822466287886
2015	43.4471868031178
2016	41.68856668873192
2017	43.09541299410489
2018	42.78993454303744
2019	42.703970786387444
2020	40.58308910448124