Year	%
1975	5.2
1981	6.5
1987	5.2
1992	6.2
1995	7
2000	7
2001	5.5
2002	5.5
2003	7.2
2004	6.8
2005	8.5
2006	7.3
2007	8.2
2008	8.9
2009	9.2
2010	8.9
2011	9.4
2012	9.6
2013	10.1
2014	9.3
2015	9.6
2016	10.4
2017	10.1
2018	10.8
2019	10.2
2020	10.1
2021	11.1