Year	Percent
2000	98.2455
2001	98.28826
2002	98.33102
2003	98.37379
2004	98.41655
2005	98.45932
2006	98.50208
2007	98.54485
2008	98.58761
2009	98.63037
2010	98.67314
2011	98.7159
2012	98.75867
2013	98.80143
2014	98.8442
2015	98.88696
2016	98.88696
2017	98.88696
2018	98.88696
2019	98.88696