Year	Percent
2000	99.81302
2001	99.77143
2002	99.73061
2003	99.69052
2004	99.65116
2005	99.61252
2006	99.57459
2007	99.53736
2008	99.50083
2009	99.46499
2010	99.42983
2011	99.39534
2012	99.36155
2013	99.32848
2014	99.29611
2015	99.26446
2016	99.23351
2017	99.20327
2018	99.17373
2019	99.14488
2020	99.11674
2021	99.0893
2022	99.06253