Year	Percent
2000	20.6835
2001	21.28552
2002	21.88798
2003	22.49057
2004	23.09361
2005	23.81846
2006	24.55142
2007	25.29236
2008	26.04116
2009	26.79708
2010	27.56061
2011	28.33161
2012	29.10965
2013	29.89462
2014	30.68639
2015	31.48752
2016	32.29726
2017	33.11574
2018	33.9428
2019	34.77797
2020	35.62107
2021	36.29104
2022	36.96208