Year	Percent
2000	85.76751
2001	85.77733
2002	85.78693
2003	85.79631
2004	85.80546
2005	85.81439
2006	85.8231
2007	85.83159
2008	85.83985
2009	85.84789
2010	85.85571
2011	85.86331
2012	85.87068
2013	85.87783
2014	85.88476
2015	85.89147
2016	85.89795
2017	85.90421
2018	85.91025
2019	85.91607
2020	85.92166
2021	85.92703
2022	85.93218