Year	% of total exports
2003	11.089624462610713
2007	6.883044889476329
2008	5.773252992819312
2009	8.603580701515977
2010	8.110145863098017
2011	5.319813448845889
2012	5.4206878182243985
2013	5.246849361557789
2014	6.110158372010302
2015	9.383090096138924
2016	10.736915774312477
2017	10.90603652267031
2018	9.502544213340343
2019	11.225338274532765