Year	Percent
2000	77.99865
2001	78.51875
2002	79.03886
2003	79.55897
2004	80.07908
2005	80.59918
2006	80.88505
2007	81.16791
2008	81.44777
2009	81.72462
2010	81.99848
2011	82.26932
2012	82.53717
2013	82.80201
2014	83.06384
2015	83.32267
2016	83.5785
2017	83.83133
2018	84.08115
2019	84.32797
2020	84.57178
2021	84.81259
2022	85.0504