Year	%
2006	6.63117150081856
2007	6.69468124280577
2008	5.91558247139224
2009	9.70857465641102
2010	7.00079451034766
2011	6.58219317797096
2012	7.2270968385805
2013	7.17774019143966
2014	6.28385408719494
2015	7.91375613175869
2016	9.19133073779546
2017	8.59154837379871
2018	8.25772518298564
2019	8.15860942153077
2020	6.21744321567926
2021	6.82689843624374