Year	Percent
2000	99.82046
2001	99.81075
2002	99.80103
2003	99.79132
2004	99.78161
2005	99.7719
2006	99.76218
2007	99.75247
2008	99.74276
2009	99.73305
2010	99.72333
2011	99.71362
2012	99.70391
2013	99.69419
2014	99.68448
2015	99.67477
2016	99.66506
2017	99.65534
2018	99.64563
2019	99.63592
2020	99.6262
2021	99.61649
2022	99.60678