Year	Percent
2000	99.81338
2001	99.81324
2002	99.82037
2003	99.82743
2004	99.83451
2005	99.84161
2006	99.84873
2007	99.85588
2008	99.86304
2009	99.87023
2010	99.87743
2011	99.88466
2012	99.89191
2013	99.89917
2014	99.90609
2015	99.91247
2016	99.91888
2017	99.91984
2018	99.91959
2019	99.91936
2020	99.91911
2021	99.91886
2022	99.91862