Year	Percent
2000	40.21726
2001	42.30641
2002	44.41497
2003	46.54166
2004	48.6862
2005	50.84598
2006	53.02108
2007	55.20996
2008	57.41229
2009	59.62603
2010	61.8457
2011	64.05155
2012	66.26971
2013	68.49901
2014	70.73942
2015	72.98959
2016	75.2489
2017	77.51606
2018	79.79092
2019	82.0727
2020	84.36121
2021	86.65564
2022	88.15688