Year	% of total merchandise exports
1964	12.969191270860078
1965	10.981572019556225
1966	8.345407128368588
1967	7.64335956807726
1968	3.4573419219140265
1969	2.0649904946509117
1970	2.218894269338398
1971	4.000606554022322
1972	3.694391302226787
1973	2.0789113347483728
1974	3.179102397852398
1975	3.041053857386675
1976	2.84943985575076
1977	3.0346057397603787
1978	2.9139051667724525
1979	2.966785494132288
1980	3.658683985443482
1981	4.303379087165736
1982	5.58082222938662
1983	5.580822229850566
1984	5.1785417970135
1985	7.615245899805896
1986	6.237583632832499
1987	5.74547235538086
1988	6.234731700281474
1989	8.380787258698245
1990	7.770258739269038
1991	12.185690647522401
1992	9.292008442211163
1993	5.1631580125748835
1994	12.125349373694105
1995	12.037515890063302
1996	21.446480931691337
1997	13.621191096275876
1998	22.720396552733842
1999	35.64105941202802
2000	41.73513844585127
2001	30.994258914323876
2002	35.689510644336735
2003	45.12868153809893
2004	49.10261982171251
2005	24.253010749900454
2006	19.937082551781675
2007	24.07143557729212
2008	20.329412909506328
2009	22.536795050652376
2010	19.04092958753299
2011	21.782920662230364
2012	28.35522225945096
2013	30.3509293042375
2014	21.729566484426332
2015	23.99635907691435
2016	21.82122613740587
2017	19.207473590895052
2018	20.00236814066344
2019	22.888822675456304
2020	21.05964008456897