Year	Percent
2000	19.61185
2001	19.42996
2002	19.24024
2003	19.0427
2004	18.83734
2005	18.62415
2006	18.40314
2007	18.1743
2008	17.93764
2009	17.69316
2010	17.44085
2011	17.18073
2012	16.91277
2013	16.637
2014	16.3534
2015	16.06197
2016	15.76272
2017	15.45565
2018	15.14076
2019	14.81804
2020	14.4875
2021	14.14914
2022	13.80295