Year	Percent
2000	84.48083
2001	84.75993
2002	85.03281
2003	85.29916
2004	85.55907
2005	85.81226
2006	86.05913
2007	86.29944
2008	86.53357
2009	86.75949
2010	86.97813
2011	87.18924
2012	87.09354
2013	86.98688
2014	86.86984
2015	86.74252
2016	86.60548
2017	86.45882
2018	86.30309
2019	86.1385
2020	85.96547
2021	85.7843
2022	85.82629