Year	%
2000	9.8
2001	9.5
2002	9.5
2003	9.1
2004	8.9
2005	8.7
2006	8.3
2007	8.2
2008	8.1
2009	7.9
2010	7.6
2011	7.6
2012	7.4
2013	7.2
2014	7.3
2015	7.3
2016	7.1
2017	6.9
2018	6.9
2019	6.8