Year	Percent
2000	97.98089
2001	97.97942
2002	97.97627
2003	97.97312
2004	97.96997
2005	97.96682
2006	97.96365
2007	97.96048
2008	97.95733
2009	98.25165
2010	98.62234
2011	98.99754
2012	99.37583
2013	99.52017
2014	99.78675
2015	99.78719
2016	99.78752
2017	99.78773
2018	99.78783
2019	99.78782
2020	99.7877
2021	99.78746
2022	99.78711