Year	%
2000	28.890646140196775
2001	28.544844916299155
2002	28.326350444203605
2003	28.076235615758623
2004	27.53598128903412
2005	27.19155310513909
2006	26.615189496193395
2007	26.364899304335403
2008	26.34462717347605
2009	26.15253862498889
2010	26.07864281199891
2011	25.781628674144596
2012	25.4198480848394
2013	24.707700174408643
2014	24.21212140958905
2015	24.127718565762695
2016	24.01457997607796
2017	23.49710739614067
2018	23.20200121049756
2019	22.96404133109101