Year	Percent
2000	86.39079
2001	86.39079
2002	86.63417
2003	86.87754
2004	87.12091
2005	87.36429
2006	87.60766
2007	87.85103
2008	88.09441
2009	88.33778
2010	88.58115
2011	88.82453
2012	89.0679
2013	89.31127
2014	89.55465
2015	89.79802
2016	90.04139
2017	90.28477
2018	90.52814
2019	90.77152
2020	91.01489
2021	91.25826
2022	91.50164