Year	Percent
2000	77.71921
2001	78.40572
2002	79.08959
2003	79.77082
2004	80.44941
2005	81.12536
2006	81.79867
2007	82.46934
2008	83.13737
2009	83.80276
2010	84.4655
2011	85.12561
2012	85.78308
2013	86.43791
2014	87.0901
2015	87.73965
2016	88.38656
2017	89.03083
2018	89.67245
2019	90.31144
2020	90.94779
2021	91.5815
2022	91.5815