Year	%
1991	7.4
1995	8.4
1996	8.1
1998	7
1999	7.7
2000	7.8
2001	7.8
2002	7.6
2003	8.1
2004	8.8
2005	8.6
2006	9.3
2007	9.4
2008	8.8
2009	9.2
2010	9.6
2011	10
2012	10.2
2013	9.8
2014	10.2
2015	10.5
2016	10.6
2017	11
2018	10.9
2019	10.8
2021	10.9
2022	11