Year	%
1986	8.6
1989	7.9
1992	8.1
1996	8.8
1997	8.5
2000	7.7
2001	8.1
2002	8.2
2003	7.7
2004	7.8
2005	8.1
2006	7.7
2007	8.4
2008	8.5
2009	8.4
2010	8.5
2011	8.6
2012	9
2013	8.7
2014	9.3
2015	9.3
2016	9
2017	10.2
2018	9.8
2019	10.1
2020	10.7
2021	11
2022	11.3