Year	%
2000	28.024006061605537
2001	27.841236599121476
2002	27.692660719937855
2003	27.459847610426518
2004	26.620460393133246
2005	26.66603211118251
2006	26.831967789718192
2007	26.989101779020274
2008	27.100334492508686
2009	27.05697202071362
2010	27.08484669124705
2011	26.84864173505634
2012	26.548969968989788
2013	25.714872299055997
2014	25.17712514368266
2015	25.375644809069243
2016	25.274037065687015
2017	24.951529153597075
2018	24.692751076101
2019	24.507960955180796