Year	Percent
2000	64.10405
2001	64.88412
2002	65.65336
2003	66.41234
2004	67.16079
2005	67.89846
2006	68.62632
2007	69.34373
2008	70.00359
2009	70.63616
2010	71.26425
2011	71.88718
2012	72.50571
2013	73.11919
2014	73.72803
2015	74.33255
2016	74.93221
2017	75.52734
2018	76.11989
2019	76.70944
2020	77.2961
2021	77.87949
2022	78.45946