Year	Percent
2000	87.36402
2001	87.60278
2002	87.83854
2003	88.07328
2004	88.30714
2005	87.99058
2006	88.14406
2007	88.31189
2008	88.47793
2009	88.64219
2010	88.80475
2011	88.9656
2012	89.12473
2013	89.28197
2014	89.43748
2015	89.59125
2016	89.74325
2017	89.89341
2018	90.0426
2019	90.19065
2020	90.33734
2021	90.48246
2022	90.62575