Year	%
1997	7.2
1998	7
1999	7.1
2000	8.2
2001	7.7
2002	7.3
2003	7.4
2004	8
2005	7.8
2006	7.9
2007	8
2008	8.6
2009	8.7
2010	9.2
2011	9.4
2012	9.5
2013	9.6
2014	9.8
2015	9.9
2016	9.7
2017	9.7
2018	10
2019	10.2
2020	9.6
2021	10.6
2022	10.5