Year	% of total merchandise exports
1960	0.10682211828260553
1961	0.013575889220743959
1962	0.09786103732699566
1963	0.09266020022016062
1964	1.1537008774975122
1965	0.4175027200553719
1966	0.3349085787713791
1967	0.26769998862275046
1968	0.16327612038548092
1969	0.09904320982274369
1970	0.1576304063215631
1971	0.19086995437027318
1972	0.22207498281332744
1973	0.37086727863612895
1974	0.20194608200258227
1975	0.2416195234226126
1976	0.17403904019213334
1977	0.28988155098048635
1978	0.26262377345999666
1979	0.2157451089263077
1980	0.684622693934868
1981	0.45001605702042985
1982	0.2797100025867162
1983	0.40983352549725405
1984	0.43741390831650695
1985	0.6654585161262373
1986	0.7450376748928886
1987	0.4120262539387924
1988	0.5958687934474733
1989	0.9534625181043279
1990	0.7973065307894479
1991	1.7094002595627427
1992	1.0145323933116053
1993	1.5352555450237308
1994	1.7767540330485003
1995	3.0612083451831253
1996	2.9561712268798996
1997	3.695929723084104
1998	2.8102687154931885
1999	4.530396097307424
2000	4.149194842217361
2001	5.146529904946616
2002	6.282893240956759
2003	5.386338261642696
2004	7.97186794524203
2005	8.06297596574869
2006	8.633941064357211
2007	7.4776223205282255
2008	6.59313760419751
2009	6.7474195477661105
2010	6.459220011203618
2011	7.402060204816043
2012	7.55368092474672
2013	10.250863372920637
2014	11.307694021268027
2015	10.10222392304056
2016	11.784650480751356
2017	16.090575074074682
2018	18.945870101235666
2019	20.525567622451238
2020	21.35984548383309