Year	% of total exports
2006	9.897231477123155
2007	7.381331243360112
2008	7.190527109574293
2009	8.880857833160059
2010	10.838546791840317
2011	10.193500462704248
2012	12.75659897839487
2013	17.37061572128119
2014	15.01945377696299
2015	16.974419544221238
2016	21.63964626899954
2017	21.358365188237393
2018	15.401806388795345
2019	15.433505658319424
2020	10.677775169814788