Year	Percent
2000	76.26066
2001	76.58467
2002	76.90864
2003	77.2326
2004	77.55652
2005	77.88043
2006	78.2043
2007	78.52816
2008	78.85199
2009	79.17579
2010	79.49957
2011	79.82333
2012	80.14706
2013	80.47076
2014	80.79444
2015	81.1181
2016	81.44173
2017	81.76533
2018	82.08892
2019	82.41247
2020	82.73601
2021	83.05951
2022	83.383