Year	Percent
2001	83.93783
2002	83.93783
2003	83.93783
2004	83.93783
2005	83.93783
2006	83.80379
2007	83.66976
2008	83.53572
2009	83.51892
2010	83.50175
2011	83.4842
2012	83.46628
2013	83.44797
2014	83.42929
2015	83.41024
2016	83.3908
2017	83.37099
2018	83.35081
2019	83.33024
2020	83.3093
2021	83.28798
2022	83.26629