Year	Percent
2000	99.87174
2001	99.87174
2002	99.87174
2003	99.86258
2004	99.85342
2005	99.84426
2006	99.83509
2007	99.82593
2008	99.81677
2009	99.80761
2010	99.79845
2011	99.78929
2012	99.78013
2013	99.77097
2014	99.7618
2015	99.75264
2016	99.74348
2017	99.73432
2018	99.72516
2019	99.72516
2020	99.72516
2021	99.72516
2022	99.72516