Year	% of total exports
2011	25.684767705111433
2012	28.846699403012323
2013	35.9615960666439
2014	36.0405929338045
2015	36.244504228828916
2016	36.09548978594949
2017	32.38741868277895
2018	31.219206582773378
2019	39.775497854378564
2020	27.7981250962992