Year	%
2008	9.70816101161147
2009	11.7728433426889
2010	10.8416327444116
2011	10.0444612873694
2012	9.96417964467918
2013	10.3640922518723
2014	7.72430988424408
2015	7.63338125563409
2016	8.77133393961641
2017	8.38444622632971
2018	8.59723826196754
2019	9.16300485073114
2020	8.38565467349706
2021	8.19369903089386