Year	%
2000	27.157669065066237
2001	27.144024017496257
2002	26.96147366069125
2003	26.942991819019838
2004	26.58859133649159
2005	26.18841419783269
2006	26.020060729625733
2007	25.769028262857823
2008	25.55886236716218
2009	25.382042031979356
2010	24.947174080561684
2011	24.63970653968319
2012	24.780386609113126
2013	24.479948882346044
2014	24.445329626117587
2015	24.696458289140605
2016	24.391625240747203
2017	24.042227393234658
2018	23.99127103994758
2019	23.899175318815384