Year	%
2000	28.164604524953962
2001	28.187681795038774
2002	28.088030716779848
2003	28.1744111067231
2004	27.855919390785505
2005	27.592759824394665
2006	27.502997226753227
2007	27.333055449551285
2008	27.233386072841423
2009	27.117642566447476
2010	26.716039088796972
2011	26.40519694956444
2012	26.344268247429312
2013	25.98485191242861
2014	25.79278620309988
2015	25.84066798337721
2016	25.46571231373513
2017	25.083560923316774
2018	24.955373259416987
2019	24.784320250830124