Year	%
2000	25.8
2001	25.5
2002	25
2003	25.2
2004	25.1
2005	25
2006	24.9
2007	25
2008	24.8
2009	24.6
2010	24.4
2011	24.3
2012	24.2
2013	24.7
2014	24.5
2015	24.4
2016	24.3
2017	24.2
2018	24.2
2019	24.1