Year	% of total merchandise exports
1960	5.9937787694475855
1961	5.181569732552169
1962	4.354513654604212
1963	4.302671378840583
1964	3.8302041244319103
1965	3.750014462865697
1966	3.6136493108838206
1967	3.3829432570414792
1968	3.459623697610762
1969	3.5103694696425976
1970	3.1577749797687913
1971	3.096115294480234
1972	3.189049397781661
1973	3.336753976603836
1974	4.533652412803737
1975	6.219635411360035
1976	6.5031174929214925
1977	6.961694775128664
1978	6.806126401611204
1979	6.983349110869527
1980	7.368153180821974
1981	9.279347702941978
1982	9.428530266352444
1983	8.370221655414776
1984	7.403025456224718
1985	6.289876556943804
1986	4.858090017175786
1987	4.092921877727601
1988	3.984415017511489
1989	3.8755751043239846
1990	3.4807560672495637
1991	3.4823553064452937
1992	3.483268558279161
1993	3.737060920703909
1994	3.3137945403306936
1995	3.1003088529616747
1996	3.0579499566331427
1997	3.0672686243244094
1998	3.064706081411505
1999	2.8761504705907113
2000	2.671010824242339
2001	2.91498881301069
2002	2.968631219356184
2003	2.9507467655528217
2004	3.044303018583785
2005	3.254051082716892
2006	3.1708367044492958
2007	3.217749645646399
2008	3.657721099946911
2009	4.04614221218946
2010	3.869412103050355
2011	3.5746418874622465
2012	4.1409200606936745
2013	4.394306066033498
2014	4.436271483970289
2015	4.618511098051989
2016	4.390593380028729
2017	4.191087322203385
2018	3.8055843146548205
2019	3.8071072514100184
2020	3.5885187543738475