Year	Percent
2000	64.35806
2001	65.14463
2002	65.9312
2003	66.71777
2004	67.50433
2005	68.2909
2006	69.11063
2007	69.93111
2008	70.75235
2009	71.57434
2010	72.39709
2011	73.22059
2012	74.04484
2013	74.86986
2014	75.69562
2015	76.52214
2016	77.34942
2017	78.17745
2018	79.00624
2019	79.83578
2020	80.66608
2021	81.49713
2022	82.32894