Year	% of total merchandise exports
1960	0.027233115468409588
1962	0.05053908355795148
1963	0.044612982377871965
1964	0.04872502842293325
1965	0.18372827059876573
1966	0.6719271314788474
1967	0.5167208546214584
1968	0.5247145707063172
1969	0.5072428125230565
1970	0.525956420437037
1971	0.45088828276074255
1972	0.24541635010812096
1973	0.03468795358023481
1974	0.01126707583717612
1975	0.056528636862359774
1976	0.09690970121720054
1977	0.11379915043888823
1978	0.23085240851344557
1979	0.06931347300573368
1980	0.407378097075671
1981	0.1339665009213483
1982	0.09438678644318486
1983	0.22222818040068684
1984	0.20175087128401467
1985	0.32018210562915433
1986	0.25742690459556145
1987	0.3589529430237539
1988	0.2475304087372761
1989	0.2867323831620248
1990	0.6198000370195258
1991	0.4851547574571036
1992	0.3388991641458766
1993	1.0074478389259587
1994	3.790567169649834
1995	5.388225937475033
1996	3.4816803152223943
1997	4.858866190340749
1998	3.946126062153822
1999	3.2784347451913103
2000	3.0020043468432367
2001	3.844496070000567
2002	3.1333922088453328
2003	2.609434753262839
2004	2.6498744019052047
2005	2.8313528234624177
2006	4.064483093206514
2007	4.816446277862675
2008	2.650651259270765
2009	2.4008106400227134
2010	2.581692927103644
2011	2.2851888664477484
2012	1.7727725486545214
2013	2.1306674955408615
2014	1.914576710835204
2015	2.2029076124148426
2016	4.092454707716286
2017	4.349973221845192
2018	4.162096147717199
2019	4.93819791731242
2020	4.92901730891869