Year	Percent
2000	78.02613
2001	78.34981
2002	78.67248
2003	78.99357
2004	79.31336
2005	79.94544
2006	80.57861
2007	81.21582
2008	81.85735
2009	82.50342
2010	83.1536
2011	83.80815
2012	84.46708
2013	85.13042
2014	85.80111
2015	86.47886
2016	87.16301
2017	87.85309
2018	88.54872
2019	89.24914
2020	89.95421
2021	89.96224
2022	89.97234