Year	Percent
2000	98.10225
2001	98.04442
2002	97.98658
2003	97.92875
2004	97.87091
2005	97.81307
2006	97.75524
2007	97.6974
2008	97.63957
2009	97.58173
2010	97.5239
2011	97.46606
2012	97.40823
2013	97.35039
2014	97.29256
2015	97.23472
2016	97.17689
2017	97.11905
2018	97.06122
2019	97.00338
2020	97.00338
2021	97.00338
2022	97.00338