Year	Percent
2000	99.99414
2001	99.98656
2002	99.97898
2003	99.97139
2004	99.96381
2005	99.95623
2006	99.94864
2007	99.94106
2008	99.93347
2009	99.92589
2010	99.91831
2011	99.91072
2012	99.90314
2013	99.90314
2014	99.90314
2015	99.90314
2016	99.90314
2017	99.90314
2018	99.90314
2019	99.90314
2020	99.90314
2021	99.90314
2022	99.90314