Year	Percent
2000	98.68521
2001	98.74771
2002	98.81022
2003	98.87272
2004	98.93522
2005	98.99773
2006	99.06023
2007	99.12273
2008	99.18524
2009	99.24774
2010	99.31024
2011	99.37275
2012	99.43525
2013	99.49775
2014	99.49775
2015	99.49775
2016	99.49775
2017	99.49775