Year	Percent
2000	77.18553
2001	77.51111
2002	77.83736
2003	78.1643
2004	78.49193
2005	78.82023
2006	79.14922
2007	79.4789
2008	79.80926
2009	80.1403
2010	80.47203
2011	80.80444
2012	81.13753
2013	81.47131
2014	81.80577
2015	82.14092
2016	82.47675
2017	82.81326
2018	83.15045
2019	83.31173
2020	83.47301
2021	83.47301
2022	83.47301