Year	Percent
2000	81.19153
2001	81.66198
2002	82.13348
2003	82.60604
2004	83.07966
2005	83.55434
2006	84.03008
2007	84.50688
2008	84.98474
2009	85.46366
2010	85.94364
2011	86.42467
2012	86.90677
2013	87.38993
2014	87.87414
2015	88.35942
2016	88.84575
2017	89.33315
2018	89.8216
2019	90.31112
2020	90.80169
2021	91.29332
2022	91.42898