Year	Percent
2000	74.41331
2001	74.74515
2002	75.07373
2003	75.39906
2004	75.72112
2005	76.03994
2006	76.35549
2007	76.66779
2008	76.97683
2009	77.28262
2010	77.58515
2011	77.88442
2012	78.18044
2013	78.4732
2014	78.7627
2015	79.04895
2016	79.33194
2017	79.61168
2018	79.88815
2019	79.82967
2020	79.58054
2021	79.33142
2022	79.33142