Year	% of total merchandise exports
1960	3.63974523075356
1961	3.8518639010087794
1962	3.682571603139796
1963	3.8858387130243095
1964	4.922363025606968
1965	5.149285624803025
1966	4.9033105330011075
1967	4.671804671001016
1968	4.97209112623616
1969	5.505066325162639
1970	4.724387659690134
1971	5.386811726910082
1972	5.150653090591727
1973	5.081528027067707
1974	4.489027469461942
1975	4.762255913971028
1976	4.489486855490556
1977	4.639877933260921
1978	4.519480061893935
1979	4.489918342385926
1980	4.548853437969007
1981	5.10354318258613
1982	4.901994696663367
1983	4.292791176247733
1984	4.51949379438072
1985	4.378214507081517
1986	4.622125604172199
1987	4.648539009706313
1988	4.671021800469422
1989	5.1004333008436475
1990	5.1003812496649
1991	5.5482235424881035
1992	6.985634060622352
1993	7.687298196212911
1994	10.559871272628376
1995	11.081967839766774
1996	11.101887613692032
1997	11.340251156287156
1998	10.627170371598487
1999	9.072738975628031
2000	9.730299793220238
2001	9.721748141212885
2002	10.07277370859208
2003	10.522747081935346
2004	10.40622525404173
2005	10.586922812898178
2006	10.486408768996313
2007	11.474127145329978
2008	11.911991564399024
2009	11.314309311175737
2010	11.751651266024885
2011	12.230290055909268
2012	13.181120280440048
2013	13.414262743110259
2014	13.05309437233378
2015	13.101172485796194
2016	13.104770980660257
2017	13.783095558047503
2018	13.789317636214454
2019	14.480801468956688
2020	14.74351915502268