Year	Percent
2000	97.2697
2001	97.22156
2002	97.17081
2003	97.11741
2004	97.06139
2005	97.00271
2006	96.94138
2007	96.87739
2008	96.81075
2009	96.74145
2010	96.6695
2011	96.59487
2012	96.45003
2013	96.352
2014	96.16813
2015	96.15984
2016	96.15126
2017	96.14236
2018	96.13317
2019	96.1237
2020	96.1139
2021	96.10382
2022	96.09347