Year	Percent
2000	65.40318
2001	65.80252
2002	66.20164
2003	66.60054
2004	66.99922
2005	67.39768
2006	67.79592
2007	68.19395
2008	68.59176
2009	68.98935
2010	69.38671
2011	69.78387
2012	70.1808
2013	70.57751
2014	70.97401
2015	71.37028
2016	71.76634
2017	72.16218
2018	72.5578
2019	72.97244
2020	73.38709
2021	73.80173
2022	73.80173