Year	%
1995	9.15
1996	7.72
1997	7.37
1998	6.34
1999	6.38
2000	6.84
2001	6.89
2002	7.09
2003	7.38
2004	7.27
2005	7.48
2006	9.25
2007	7
2008	7.06
2009	7.35
2010	6.85
2011	6.81
2012	6.98
2013	6.92
2014	6.75
2015	7.16
2017	7.73
2018	7.73
2019	8.2
2020	8.42
2021	7.88