Year	% of total merchandise exports
1960	2.1786461297649566
1961	2.709081935386347
1962	3.6962418734745413
1963	4.1420417097077475
1964	4.563496878749882
1965	4.996007407718721
1966	4.70090810582564
1967	5.1870927912540665
1968	4.759359230927876
1969	6.718763307908738
1970	7.1519684572956805
1971	6.457024671270806
1972	9.752001085748182
1973	10.248796378367656
1974	9.966831302512148
1975	6.016778985337183
1976	4.229246483512319
1977	4.606227837532018
1978	4.633929076804005
1979	5.179436957159439
1980	5.88605517323634
1981	6.643378089918739
1982	6.89517099850231
1983	6.215203303869625
1984	5.594664793044431
1985	6.130855210594389
1986	5.7696837582148905
1987	6.629771069796601
1988	5.947105381070574
1989	5.966872961055277
1990	6.725021099311538
1991	7.3463590437184045
1992	8.94416855853071
1993	7.554509365430177
1994	7.505911705381922
1995	6.616077160678385
1996	6.591003064981529
1997	6.460660235306948
1998	7.8577882914082355
1999	6.855024881325339
2000	9.904367590575571
2001	9.453780130896435
2002	9.569431312984603
2003	9.280666305514762
2004	10.62841817891839
2005	12.904043428554143
2006	12.28416409911139
2007	9.705905385697424
2008	9.352110320596218
2009	11.115734010652638
2010	10.997641518609127
2011	16.684865051547945
2012	16.73712510420406
2013	17.018821528855998
2014	15.434338150401855
2015	13.082217210488912
2016	13.259288442549447
2017	12.391421819399733
2018	12.210402020989276
2019	12.5457919628823
2020	12.865053534875825