Year	Percent
2000	62.11412
2001	62.99085
2002	63.86448
2003	64.7344
2004	65.6009
2005	66.4637
2006	67.06657
2007	67.65959
2008	68.24257
2009	68.81828
2010	69.38666
2011	69.94787
2012	70.50137
2013	71.04756
2014	71.58593
2015	72.11667
2016	72.63971
2017	73.15462
2018	73.66178
2019	74.16096
2020	74.65215
2021	75.13534
2022	75.61013