Year	Percent
2000	51.91611
2001	53.33124
2002	54.63514
2003	55.93063
2004	57.23544
2005	58.54847
2006	59.87078
2007	61.60233
2008	63.34246
2009	65.0869
2010	66.83741
2011	68.59232
2012	70.14986
2013	71.68014
2014	73.21769
2015	74.76207
2016	76.01731
2017	77.26922
2018	78.5139
2019	79.75169
2020	80.02624
2021	80.29223
2022	80.55082