Year	Percent
2000	97.99281
2001	97.99281
2002	97.99281
2003	97.99281
2004	97.99281
2005	97.96025
2006	97.92767
2007	97.89507
2008	97.86243
2009	97.82977
2010	97.79708
2011	97.76436
2012	97.73162
2013	97.69885
2014	97.66606
2015	97.63323
2016	97.60038
2017	97.56751
2018	97.5346
2019	97.50167
2020	97.46871
2021	97.43573
2022	97.43573