Year	Percent
2000	99.35648
2001	99.36259
2002	99.36886
2003	99.37528
2004	99.39055
2005	99.40519
2006	99.41923
2007	99.43267
2008	99.44555
2009	99.45784
2010	99.46957
2011	99.48075
2012	99.49141
2013	99.50153
2014	99.51115
2015	99.52026
2016	99.52884
2017	99.5369
2018	99.54447
2019	99.55159
2020	99.55827
2021	99.56455
2022	99.57045