Year	Percent
2000	98.56691
2001	98.58668
2002	98.60644
2003	98.62621
2004	98.64598
2005	98.66574
2006	98.68551
2007	98.70528
2008	98.72505
2009	98.74481
2010	98.76458
2011	98.78435
2012	98.80411
2013	98.82388
2014	98.84365
2015	98.86341
2016	98.88318
2017	98.90295
2018	98.92271
2019	98.94248
2020	98.96225
2021	98.98202
2022	99.00178