Year	Percent
2000	99.97914
2001	99.97706
2002	99.97498
2003	99.97289
2004	99.97081
2005	99.96873
2006	99.96664
2007	99.96456
2008	99.96248
2009	99.9604
2010	99.95831
2011	99.95623
2012	99.95415
2013	99.95207
2014	99.94998
2015	99.9479
2016	99.94582
2017	99.94374
2018	99.94165
2019	99.94165
2020	99.94165
2021	99.94165
2022	99.94165