Year	Percent
2000	82.56711
2001	82.86552
2002	83.16404
2003	83.46265
2004	83.76137
2005	84.06017
2006	84.35908
2007	84.65809
2008	84.95719
2009	85.25639
2010	85.55569
2011	85.85508
2012	86.15457
2013	86.45417
2014	86.75385
2015	87.05364
2016	87.35352
2017	87.65351
2018	87.95359
2019	88.25376
2020	88.55404
2021	88.55404
2022	88.55404