Year	Percent
2000	98.14279
2001	98.14274
2002	98.14269
2003	98.14264
2004	98.14259
2005	98.17976
2006	98.21696
2007	98.2542
2008	98.29151
2009	98.32888
2010	98.36633
2011	98.40385
2012	98.44122
2013	98.4784
2014	98.51551
2015	98.55254
2016	98.58951
2017	98.62641
2018	98.66335
2019	98.70035
2020	98.73746
2021	98.77469
2022	98.81208