Year	% of total exports
1995	9.700369344413668
1996	9.38922715007261
1999	18.37837837837838
2000	17.417991948662763
2001	18.565678140146225
2002	20.670501884546717
2003	24.395692813107473
2004	26.40916391954263
2005	19.628201177093647
2006	18.19305322396285
2007	18.232986760966234
2008	14.782473101512553
2009	13.022465549200065
2010	12.995064813908275
2011	12.401005009947161
2012	14.729344276383124
2013	16.12412504610804
2014	19.41027217047615
2015	17.399332180686688
2016	16.896619671590983
2017	16.983374880809126
2018	18.10976402779104
2019	20.653592682378555
2020	12.342961437023762