Year	%
2000	26.6
2001	26.2
2002	26.2
2003	25.4
2004	25.8
2005	26
2006	26.1
2007	25.9
2008	26.2
2009	25.9
2010	25.7
2011	25.5
2012	25.4
2013	25.3
2014	25.1
2015	25.1
2016	24.9
2017	24.7
2018	24.6
2019	24.3