Year	Percent
2000	98.56182
2001	98.56779
2002	98.57376
2003	98.5797
2004	98.58567
2005	98.6182
2006	98.65789
2007	98.6954
2008	98.73081
2009	98.76406
2010	98.79536
2011	98.82473
2012	98.85231
2013	98.87807
2014	98.90221
2015	98.91248
2016	98.92255
2017	98.93239
2018	98.94199
2019	98.95137
2020	98.96051
2021	98.96503
2022	98.96939