Year	%
2000	28.166468477937205
2001	27.80320939824847
2002	27.568383786010845
2003	27.343535985830375
2004	26.91162615991537
2005	26.62691432796017
2006	26.242163379264095
2007	26.07039219892657
2008	26.025173588950732
2009	25.85911803637802
2010	25.787989102566716
2011	25.54913247393218
2012	25.236928330839973
2013	24.611988239080063
2014	24.08168454894152
2015	24.020805066857825
2016	23.865927764968436
2017	23.457699525002226
2018	23.19171146387571
2019	23.00995297784564