Year	Percent
2000	87.53536
2001	87.50957
2002	87.92899
2003	88.26265
2004	88.54482
2005	88.82418
2006	89.07559
2007	89.31975
2008	89.56349
2009	89.8144
2010	90.07176
2011	90.32743
2012	90.58126
2013	90.83324
2014	91.08324
2015	91.51934
2016	91.95677
2017	92.39536
2018	92.40346
2019	92.41313
2020	92.42437
2021	92.43718