Year	% of total merchandise exports
1960	9.776688453159041
1961	10.973196618096779
1962	9.088611859838277
1963	7.903933377946316
1964	8.602674462671214
1965	6.4257784896593995
1966	7.845737388150072
1967	8.911983279145378
1968	12.390517275970026
1969	10.262905486830132
1970	9.710518906720049
1971	9.22356554348429
1972	7.656356351558986
1973	10.933686601136026
1974	12.872774082814848
1975	14.290002241574001
1976	19.16911575613985
1977	18.520283438785004
1978	8.088376645333792
1979	11.710502699314278
1980	6.837701711687652
1981	17.64304526700713
1982	11.872129204878322
1983	7.063475592741926
1984	7.698900688806962
1985	2.8683830396310936
1986	4.857820933201238
1987	4.001079678801255
1988	3.5622573722597055
1989	4.613591400320981
1990	4.027653536986742
1991	4.966143898524078
1992	4.7619605702071395
1993	4.570707031452436
1994	4.874450946072359
1995	4.539267602435412
1996	5.625171835023591
1997	2.979302831299246
1998	3.671287380925413
1999	3.6644187287802636
2000	3.721121516659261
2001	4.194550453373767
2002	1.1838901009000644
2003	0.9904863918418879
2004	0.8457719974275543
2005	0.9014115672276877
2006	0.8244966468755557
2007	0.8075230607962659
2008	0.8125882860092954
2009	1.065157966406413
2010	1.111466309420886
2011	1.0851492548177515
2012	1.308759874962545
2013	1.1289215192637956
2014	1.4779345096878795
2015	1.207679308378985
2016	4.043409852335583
2017	3.7708285058817905
2018	2.9263006544938652
2019	4.654952515672849
2020	7.0968576194458235