Year	Percent
2000	71.86939
2001	72.01605
2002	71.70607
2003	71.21102
2004	70.68706
2005	70.16311
2006	69.63881
2007	69.11455
2008	68.58997
2009	68.06548
2010	67.54071
2011	67.01607
2012	66.49118
2013	65.96647
2014	65.45411
2015	64.95493
2016	64.46896
2017	63.99663
2018	63.53877
2019	63.09495
2020	62.66646
2021	62.2528
2022	62.29425