Year	Percent
2000	23.74773
2001	23.29258
2002	22.84098
2003	22.39297
2004	21.9486
2005	21.50795
2006	21.08914
2007	20.67881
2008	20.27693
2009	19.88359
2010	19.49873
2011	19.12245
2012	18.75467
2013	18.39536
2014	18.04459
2015	17.70228
2016	17.3684
2017	17.04284
2018	16.72563
2019	16.41666
2020	16.11586
2021	16.14617
2022	16.17447