Year	Percent
2000	97.80272
2001	97.79932
2002	97.84864
2003	97.89956
2004	97.95436
2005	98.00888
2006	98.06018
2007	98.11085
2008	98.16173
2009	98.21362
2010	98.26636
2011	98.31903
2012	98.37163
2013	98.42415
2014	98.47659
2015	98.52896
2016	98.58136
2017	98.63375
2018	98.68607
2019	98.73825
2020	98.79026
2021	98.84204
2022	98.89353