Year	Percent
2000	98.80898
2001	98.84723
2002	98.88549
2003	98.92375
2004	98.96201
2005	99.00026
2006	99.03852
2007	99.07678
2008	99.11504
2009	99.08234
2010	98.99992
2011	98.91741
2012	98.8348
2013	98.7521
2014	98.66931
2015	98.65723
2016	98.75353
2017	98.84989
2018	98.94628
2019	99.04272
2020	99.13921
2021	99.1773
2022	99.21539