Year	Percent
2000	98.59625
2001	98.63799
2002	98.67972
2003	98.72145
2004	98.76318
2005	98.80491
2006	98.84664
2007	98.88837
2008	98.9301
2009	98.97183
2010	99.01357
2011	99.0553
2012	99.09703
2013	99.13876
2014	99.18049
2015	99.2098
2016	99.2098
2017	99.2098
2018	99.2098
2019	99.2098
2020	99.2098
2021	99.2098
2022	99.2098