Year	Percent
2000	54.7618
2001	54.74352
2002	54.72525
2003	54.90841
2004	55.09142
2005	55.27431
2006	55.45706
2007	55.63967
2008	55.82215
2009	56.0045
2010	56.18671
2011	56.36879
2012	56.55073
2013	56.73254
2014	56.91421
2015	57.09575
2016	57.27716
2017	57.45843
2018	57.63956
2019	57.82056
2020	58.00143
2021	58.18216
2022	58.18216