Year	% of total merchandise exports
1960	2.286585365853659
1961	6.6572237960339935
1962	4.6539379474940334
1963	4.8025613660619
1964	5.675675675675676
1965	5.189775367931835
1966	4.636233951497861
1967	3.9501039501039505
1968	3.0525030525030523
1969	5.525061993257363
1970	1.5477015477015477
1971	1.5613417655583233
1972	3.3153564086603096
1973	2.6841958200255367
1974	1.3752011035415352
1975	5.617525317801809
1976	2.539925967739518
1977	5.757050815084184
1978	10.068842383560233
1979	2.0784012967441834
1980	8.213794929748145
1981	13.506615644776845
1982	4.478188999009354
1983	6.073079105970109
1984	1.0173003267478848
1985	0.6243136292524311
1986	2.1690484365565172
1987	1.9448439747357888
1988	1.7792209882166579
1989	1.9362907943227974
1990	1.1366805021630033
1991	1.512594821678611
1992	2.45266330200241
1993	1.9959040747721706
1994	2.2760942784990847
1995	2.346510107027839
1996	2.514288449357438
1997	4.021875420308484
1998	3.6301759021146496
1999	1.7389223866930634
2000	2.4213805934536228
2001	3.185432371826063
2002	3.5778689577747977
2003	3.653623076007828
2004	4.382874500128443
2005	4.736693127589429
2006	5.4874049135587954
2007	4.647181545238403
2008	6.062600073881316
2009	6.6899303348703185
2010	6.311676476683867
2011	7.652837821758461
2012	9.810392274208601
2013	9.212118068626499
2014	10.415761877372274
2015	8.399624761851912
2016	6.703823054180588
2017	7.621269787749332
2018	8.251957792149817
2019	8.176501605947855
2020	6.323073640503734