Year	Percent
2000	28.05522
2001	28.34986
2002	28.78981
2003	29.24864
2004	29.69821
2005	30.13608
2006	30.56328
2007	30.97873
2008	31.3826
2009	31.77232
2010	32.15005
2011	32.51371
2012	32.87362
2013	33.21906
2014	33.54989
2015	33.86497
2016	34.15867
2017	34.43011
2018	34.67975
2019	34.96077
2020	35.25997
2021	35.55342
2022	35.84054