Year	Percent
2000	79.95333
2001	80.31577
2002	80.67821
2003	81.04064
2004	81.40308
2005	81.57449
2006	81.74421
2007	81.91224
2008	82.07858
2009	82.24322
2010	82.40617
2011	82.56742
2012	82.72698
2013	82.88485
2014	83.04102
2015	83.19551
2016	83.34829
2017	83.49939
2018	83.64879
2019	83.64879
2020	83.64879
2021	83.64879
2022	83.64879