Year	Percent
2000	70.63287
2001	70.75423
2002	70.87355
2003	70.99047
2004	71.10532
2005	71.21706
2006	71.32638
2007	71.43326
2008	71.53771
2009	71.63906
2010	71.73796
2011	71.83442
2012	71.92809
2013	72.019
2014	72.10714
2015	72.19524
2016	72.2826
2017	72.36947
2018	72.45574
2019	72.54106
2020	72.62534
2021	72.73827
2022	72.85093