Year	Percent
2000	88.97353
2001	89.03731
2002	89.10108
2003	89.16486
2004	89.22863
2005	89.29241
2006	89.35618
2007	89.41996
2008	89.48373
2009	89.54751
2010	89.61128
2011	89.67506
2012	89.73883
2013	89.80261
2014	89.86638
2015	89.93016
2016	89.99393
2017	90.0577
2018	90.12148
2019	90.18525
2020	90.24903
2021	90.3128
2022	90.37658