Year	%
1994	8
1995	8.2
1996	8.5
1997	8.4
1998	8.2
1999	8.6
2000	8.7
2003	8.5
2004	8.5
2005	8.8
2006	8.6
2007	8
2008	8
2009	7.7
2010	8
2011	7.8
2012	7.8
2013	8.1
2014	8
2015	7.9
2016	7.7
2017	8
2018	7.9
2019	7.9
2020	7.9
2021	7.7