Year	%
1998	7.9
1999	7.6
2000	7.9
2001	8.2
2002	8.3
2003	8.6
2004	9.4
2005	8.9
2006	8.8
2007	8.6
2008	9
2009	9.1
2010	8.8
2011	9.2
2012	9.5
2013	9.5
2014	9.3
2015	9.7
2016	9.9
2017	9.9
2018	10.1
2019	10
2020	10.3