Year	%
2000	25.681249837769784
2001	25.691411272078337
2002	25.79156377672521
2003	25.742327650302574
2004	25.639298562445358
2005	25.5525262540772
2006	25.28492060549817
2007	25.049602155357864
2008	24.797271061136733
2009	24.505063517196273
2010	24.282824657541354
2011	24.048250617706515
2012	23.91713314738673
2013	23.872060021537326
2014	23.71770779220533
2015	23.44879577798121
2016	23.28089207547882
2017	22.998751536338197
2018	22.79633694067251
2019	22.632192099250894