Year	%
2005	6.93464044371932
2006	6.48851453820897
2007	6.04732781329616
2008	6.82046607411273
2009	8.51122266859249
2010	5.40141433444005
2011	5.54786930868647
2012	5.50258174332341
2013	6.12922696123063
2014	6.85289678961418
2015	7.29080600484367
2016	7.12062909171045
2017	8.01710711367974
2018	8.30050983901524
2019	8.5879863137146
2020	8.12586633711488
2021	7.70484399222499