Year	%
2000	9.887420086447673
2001	9.666539960362165
2002	9.556431478203704
2003	9.541588576609369
2004	9.536930560296154
2005	9.62673130842685
2006	9.718012068845006
2007	9.909924314335361
2008	10.009923535268866
2009	10.201299930037715
2010	10.391672840347601
2011	10.58077326792839
2012	10.777348063390352
2013	10.881681559201287
2014	11.084926052213227
2015	11.195926463333643
2016	11.396676162011516
2017	11.49637684118705
2018	11.695322028141623
2019	11.902667892900855