Year	Percent
2000	8.9964
2001	9.55376
2002	10.11111
2003	10.67798
2004	11.24585
2005	11.81471
2006	12.38456
2007	12.95541
2008	13.52725
2009	14.10009
2010	14.67392
2011	15.24874
2012	15.82456
2013	16.40137
2014	16.97918
2015	17.55798
2016	18.13777
2017	18.71856
2018	19.30035
2019	19.88313
2020	20.4669
2021	21.05166
2022	21.63742