Year	%
1992	5.81
1995	10.62
1996	10.32
1997	10.55
1998	12.88
1999	12.31
2000	12.15
2001	12.37
2002	10.67
2004	9.31
2005	8
2006	7.26
2007	7.68
2008	6.55
2009	7.72
2010	8.51
2011	8.64
2012	7.96
2013	8.64
2014	8.63
2015	8.59
2016	9.42
2017	11.33
2018	9.82
2019	9.8
2020	10.01
2021	9.97