Year	Percent
2000	99.79653
2001	99.68324
2002	99.56996
2003	99.45667
2004	99.34339
2005	99.23011
2006	99.11682
2007	99.00354
2008	98.89025
2009	98.77697
2010	98.66369
2011	98.5504
2012	98.43712
2013	98.32383
2014	98.21055
2015	98.09727
2016	97.98398
2017	97.8707
2018	97.75741
2019	97.64413
2020	97.53085
2021	97.41756
2022	97.30428