Year	%
2000	23.1
2001	24.3
2002	22.7
2003	22.3
2004	24.6
2005	23.6
2006	24.3
2007	23.4
2008	23.6
2009	23.4
2010	24
2011	23.7
2012	23.1
2013	21.6
2014	21.9
2015	22.7
2016	23
2017	22.7
2018	23.4
2019	23.6