Year	Percent
2000	98.98142
2001	98.98978
2002	98.99815
2003	99.00652
2004	99.01489
2005	99.02326
2006	99.03163
2007	99.03999
2008	99.04836
2009	99.05673
2010	99.0651
2011	99.07347
2012	99.08183
2013	99.0902
2014	99.09857
2015	99.10694
2016	99.11531
2017	99.12368
2018	99.13204
2019	99.14041
2020	99.14878
2021	99.15715
2022	99.15715