Year	% of total exports
2008	3.0745762932609018
2009	4.2168554275533845
2010	5.728735463002915
2011	5.3960467350747585
2012	7.170886995373528
2013	12.940989465074914
2014	6.094592110414411
2015	6.067873199833752
2016	5.457683031629039
2017	1.387809421545286
2018	3.1066088353062953
2019	5.607752557994169
2020	5.0802477239003645