Year	Percent
2000	99.88275
2001	99.88576
2002	99.88001
2003	99.78034
2004	99.68066
2005	99.58097
2006	99.48128
2007	99.38158
2008	99.28188
2009	99.18217
2010	99.08245
2011	98.98273
2012	98.883
2013	98.78326
2014	98.68352
2015	98.68649
2016	98.68947
2017	98.69245
2018	98.69245
2019	98.69245
2020	98.69245
2021	98.69245
2022	98.69245