Year	Percent
2000	81.93204
2001	82.04798
2002	82.16393
2003	82.27987
2004	82.39582
2005	82.51177
2006	82.62771
2007	82.74366
2008	82.85961
2009	82.97555
2010	83.0915
2011	83.20744
2012	83.32339
2013	83.43934
2014	83.55528
2015	83.67123
2016	83.78718
2017	83.90312
2018	84.01907
2019	84.13501
2020	84.13501
2021	84.13501
2022	84.13501