Year	% of total merchandise exports
1960	10.391425908667289
1961	9.889660809154066
1962	8.207343412526997
1963	7.136715391229578
1964	7.545627894306728
1965	9.785932721712538
1966	8.594843094143515
1967	8.745934224792194
1968	9.859375
1969	10.099908922805177
1970	10.966966044881145
1971	11.112498309352144
1972	9.983814264332208
1973	7.385880740233036
1974	10.26043008512901
1975	13.175901975535107
1976	11.003183988141817
1977	8.184245271083459
1978	8.567783110411078
1979	5.460256100507369
1980	6.501542402540003
1981	6.981827155271183
1982	6.2721065274546515
1983	5.350011745360582
1984	5.23652137988019
1985	4.538515361618218
1986	4.599162011173184
1987	3.7894611915499645
1988	4.336173161584869
1989	6.056590677591786
1990	6.012494793835902
1991	5.837679410370242
1992	7.181411017111358
1993	9.480628821442865
1994	11.075560529933453
1995	11.064838914917
1996	12.038175220525327
1997	12.394945896306787
1998	11.561575029150596
1999	11.114945024269963
2000	13.59250682351614
2001	14.115006317325998
2002	13.7382129412841
2003	14.799759686057957
2004	15.54794627234542
2005	14.994177361109479
2006	14.774073483735616
2007	16.111986170159604
2008	18.649364545003785
2009	18.19237533460362
2010	22.145092373217928
2011	22.137625890937635
2012	23.39176011470133
2013	24.72155138233068
2014	23.450452175022768
2015	22.939244489332992
2016	21.750340681682598
2017	18.55183640553379
2018	21.477636599272525
2019	22.264227845871407
2020	23.03413787824667