Year	% of total exports
2007	9.134134256838358
2008	7.888135231911642
2009	8.76805448142573
2010	7.543068583956278
2011	7.4048361855355775
2012	7.334826212441987
2013	6.591803379883957
2014	7.048801500767785
2015	7.579041329348785
2016	7.595332802566039
2017	7.804657576020146
2018	7.774276385918395
2019	7.654856268559956
2020	5.576538564243729