Year	%
2004	24.8
2005	24.6
2006	24.4
2007	24.4
2008	23.7
2009	24.8
2010	24.9
2011	24.9
2012	25.6
2013	26.2
2014	25.7
2015	25.4
2016	24.8
2017	24.2
2018	24.6
2019	24.4
2020	24
2021	24.3