Year	Percent
2000	98.79801
2001	98.79718
2002	98.79637
2003	98.79495
2004	98.79332
2005	98.79173
2006	98.79015
2007	98.7886
2008	98.78708
2009	98.78557
2010	98.78475
2011	98.78459
2012	98.78442
2013	98.78399
2014	98.78355
2015	98.78312
2016	98.78266
2017	98.78217
2018	98.78165
2019	98.7811
2020	98.78055
2021	98.77995
2022	98.77933