Year	Percent
2000	98.24287
2001	98.27364
2002	98.30435
2003	98.33502
2004	98.36564
2005	98.39622
2006	98.42674
2007	98.45656
2008	98.48599
2009	98.51547
2010	98.54496
2011	98.5745
2012	98.60362
2013	98.63281
2014	98.66208
2015	98.69141
2016	98.72082
2017	98.75057
2018	98.75587
2019	98.76142
2020	98.76719
2021	98.76791
2022	98.76886