Year	Percent
2000	78.21829
2001	78.97315
2002	79.71555
2003	80.44563
2004	81.16331
2005	81.8685
2006	82.5614
2007	83.23211
2008	83.88698
2009	84.53138
2010	85.16567
2011	85.78981
2012	86.40189
2013	87.00301
2014	87.59508
2015	88.17792
2016	88.75182
2017	89.31666
2018	89.69886
2019	90.02109
2020	90.26677
2021	90.31623
2022	90.36473