Year	Percent
2000	63.45988
2001	64.01388
2002	64.56597
2003	65.11636
2004	65.66502
2005	66.21195
2006	66.75695
2007	67.30018
2008	67.84164
2009	68.33692
2010	68.82982
2011	69.31998
2012	69.80753
2013	70.29232
2014	70.77458
2015	71.25587
2016	71.73594
2017	72.21442
2018	72.69104
2019	73.16532
2020	73.63688
2021	74.1055
2022	74.13015