Year	Percent
2000	80.40336
2001	80.81046
2002	81.19348
2003	81.5527
2004	81.88881
2005	82.20206
2006	82.4941
2007	82.76514
2008	83.01672
2009	83.24814
2010	83.46135
2011	83.6565
2012	83.835
2013	83.99615
2014	84.13764
2015	84.53874
2016	84.9228
2017	85.29116
2018	85.64474
2019	85.98402
2020	86.31061
2021	86.62493
2022	86.92777