Year	Percent
2000	9.60294
2001	9.88565
2002	10.17042
2003	10.45706
2004	10.74558
2005	11.17731
2006	11.61955
2007	12.07223
2008	12.53545
2009	13.00826
2010	13.49142
2011	13.98932
2012	14.4999
2013	15.01993
2014	15.54974
2015	16.08923
2016	16.6392
2017	17.19931
2018	17.76945
2019	18.34951
2020	18.93937
2021	19.06793
2022	19.19764