Year	Percent
2000	82.10168
2001	82.32501
2002	82.54848
2003	82.77211
2004	82.99589
2005	83.21982
2006	83.4439
2007	83.66812
2008	83.8925
2009	84.11703
2010	84.34171
2011	84.56654
2012	84.79153
2013	85.01666
2014	85.24194
2015	85.46737
2016	85.69296
2017	85.91869
2018	86.14458
2019	86.37061
2020	86.5968
2021	86.78918
2022	86.98157